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00:00In the island nation of Japan, which consists of more than 14,000 islands,
00:06there are many mysterious islands that even the locals don't know about.
00:16When we looked into such islands with a drone,
00:21This is exciting.
00:23Is this an experiment?
00:25There are some crazy places in there.
00:28Now we have a clue to solve the mystery.
00:33Let's go and see the mysterious islands.
00:40This time, we are going to explore Seto Inland Sea, which has about 3,000 islands.
00:473,000 islands?
00:48According to the local TV station,
00:51there are islands that have no records of being interviewed or reported.
00:57The staff decided to go to the place where they can see the islands.
01:03There is a golf course by the sea.
01:06There is a mysterious island right in front of them.
01:10There is a golf course.
01:13I can see it.
01:15In front of me...
01:19There is an island.
01:22This is it.
01:25This is a mysterious island that the local TV station has no records of.
01:31When we looked into it, it was called Kamimizushima.
01:36Kamimizushima.
01:41Kamimizushima is an island that is right in front of our eyes and noses.
01:46Do the locals know anything about it?
01:52We asked the president of a nearby shopping mall.
01:58Kamimizushima?
02:00No.
02:01It's not a book.
02:03There is a place called Kamimizushima.
02:06I've never heard of it.
02:08I don't know.
02:09I see.
02:11Is there such a place?
02:14We asked a tourist information center nearby.
02:18I've never heard of it.
02:20I see.
02:22It's near here.
02:24I see.
02:26It seems that almost no one knows anything about Kamimizushima.
02:33When we looked into it, there was no regular line, so we can't go up there.
02:39So...
02:41Let's fly the drone and go see it from the sky.
02:48Let's go.
02:51Here we go.
02:53We're flying the drone.
02:55I wonder what kind of island this is.
02:57I'm excited to see what kind of island this is.
03:00Let's go.
03:01Let's go.
03:04It's a video camera.
03:05You can't take a video like this with a regular camera.
03:09What can we see?
03:11What can we see?
03:12The right side of the island is flat.
03:15It looks like a sandy beach.
03:17It looks like a sandy beach.
03:19It looks like a pier.
03:21It's mysterious.
03:23It's clear.
03:24I see something white on the right.
03:27Is it a sandy beach?
03:30Let's go to the right.
03:35There's a beach.
03:36There is.
03:37There is.
03:38It's nice.
03:39There are two big sandy beaches.
03:44It's beautiful.
03:48There is a place where the beach stretches for a long time.
03:53You're right.
03:55It's really flat.
03:59Is this artificial?
04:01It doesn't look like a pier.
04:08What's that in front of us?
04:11It looks like a circle of people.
04:13You're right.
04:17Is that a tile?
04:19I think so.
04:20Is it a tile or a brick?
04:22It looks like a tile in front of us.
04:25What is this?
04:26It looks like a tile.
04:28It looks like a tile.
04:31It looks like a tile.
04:34It looks like a brick.
04:35It looks like a tile.
04:36It looks like a tile.
04:40There is a white square area next to it.
04:45This is it.
04:46I'm curious about this, too.
04:47You're right.
04:48What is this?
04:50Is this a trace of a building?
04:54There is a trace of a pillar.
04:57This is a huge square area.
05:00What is this flat place?
05:04It's not a cage of a stick.
05:07What is this picture?
05:09It looks like a picture of a person's hand.
05:13It looks like a place to store things.
05:16It looks like a place to store things on such a small island.
05:23What is that?
05:24It looks like a building.
05:26It looks like a building.
05:27You're right.
05:28It looks like a solar panel.
05:31Is that wrong?
05:33Is that a solar panel?
05:35There are two solar panels.
05:37The person upstairs is making electricity 24 hours a day.
05:41What is that?
05:42Is that a wind turbine?
05:45It looks like a wind turbine.
05:48Is that a propeller?
05:50Is that a propeller?
05:51What is this?
05:54This is old.
05:56Is that a solar panel?
05:57This is old.
05:59The door is open.
06:01The person upstairs is not sloppy.
06:07Can we get closer?
06:10Let's take a look around.
06:17It's a strange building.
06:21There are characters on the wall.
06:23It's interesting to look at it with a drone.
06:26There is a white thing under the shutter.
06:31It says, experiment.
06:34What is this?
06:35It's scary.
06:36It says, experiment.
06:37It's too scary.
06:39It says, experiment.
06:40What is this?
06:42What kind of experiment is this?
06:47It says, experiment.
06:49It says, experiment.
06:51There is a driver's seat.
06:54It's a truck.
06:56It looks like a truck.
06:58How does a truck get in?
07:01There is no bridge.
07:03Let's fly in the sky.
07:09I don't know much about the sky.
07:14There are mountains and water.
07:21What did they find out from the drone flight?
07:26It's close.
07:28It's a strange shape with a black line extending only in one direction.
07:35Most of the island is covered by a thin forest.
07:41There are traces of people by the sea.
07:48After this, they thoroughly investigate the identity of the mysterious island, Kamimizushima.
07:56What was the black line in front of us?
08:02It's a forest and a strange thing.
08:06There was a tree growing there.
08:08It must have been cut down.
08:10They must have tried to do something.
08:12They flattened it.
08:14For example, they tried to build a heliport.
08:19There was a truck.
08:21It says, experiment.
08:23What does that mean?
08:25Does it mean that someone brought it?
08:27It doesn't mean that we can't broadcast after filming all this, does it?
08:33The search for the mysterious island this time is...
08:36First, they approach the island by boat.
08:39Then, they use a small drone to find out what they are interested in.
08:43Then, they proceed with the investigation of what they are interested in.
08:47Finally, they land on the island.
08:49Then, they conduct a pinpoint survey.
08:52A small drone is good.
08:54Because we can go into the forest.
08:55To investigate in detail from the first flight,
08:58they prepared a small drone, an avatar.
09:04The drone operator is Yuzo Takahashi.
09:09He has transferred from being a photographer in the advertising industry.
09:13He is a drone operator who is particular about beautiful drone images.
09:20Let's ask him about this small drone.
09:25For example, if you want to go into a narrow place,
09:29you can use this type of drone.
09:30It's small.
09:31The propeller guard is stronger than a normal drone.
09:35It's designed so that it doesn't fall to the side.
09:42The head-mounted display is installed during the flight.
09:47When this is installed, the image of the camera equipped with the drone becomes visible.
09:53You can control it even in a place where you can't see the aircraft.
10:00Let's start the investigation.
10:02It looks fun.
10:03It's good.
10:06What can we find with this small drone?
10:14The black ground is like lava.
10:19It's amazing.
10:21You can't take a picture unless you ride a paraglider.
10:24It's amazing.
10:25This area is wide.
10:27Is it made of lava?
10:29Did they flatten the lava?
10:33It looks like lava, but we don't know what it is yet.
10:41Let's see if we can enter the forest.
10:46We couldn't enter the forest in the first flight,
10:49but with this small drone, we should be able to enter the forest.
10:54What will we see?
10:57Let's go.
11:01Is there a place where we can enter the island?
11:08Let's get closer.
11:12It seems to continue to the right.
11:15Is there a road in the forest?
11:17Yes, there is.
11:18It looks like a road.
11:21It's wide.
11:22People made this road.
11:24It's getting wider.
11:26It's amazing.
11:28It's amazing.
11:30Is this Jurassic Park?
11:32I'm scared.
11:33Something will come out.
11:38I'm excited.
11:40We can enter the forest.
11:42We can enter the forest.
11:45This is interesting.
11:48We can enter the forest.
11:50It's a wide road.
11:51It's like a field.
11:53I think a car can pass through here.
11:56We can go further.
11:58It's amazing.
12:01Is the battery okay?
12:03The battery is okay, but the radio waves are...
12:06The radio waves are bad.
12:08The radio waves are bad.
12:10Let's go back slowly.
12:12Let's see if there are traces of people around.
12:17The transmitter is so small.
12:20What is it?
12:22It's white.
12:23It's rolling down.
12:25It's white.
12:26What is this?
12:31It's a box.
12:32It's white.
12:33What is this?
12:35It's not a lid of a box.
12:36Trash has come this far.
12:38People used it here.
12:41Can you see something?
12:43Is it in the back?
12:45It's reddish.
12:47I can see something.
12:48What is that?
12:49It's amazing.
12:50It looks like it's standing up.
12:53There's something on top.
12:54Isn't it big?
12:56It's amazing.
12:57What is it?
12:58It's a big wall.
13:00It's big.
13:02What is this?
13:04It's a brick.
13:06It's amazing.
13:07It's a door.
13:08It's amazing.
13:10It's a huge ruin.
13:12It's amazing.
13:14It's not a ruin.
13:16It's a brick.
13:17It's a brick.
13:19It's amazing.
13:21Can we go over the stone wall?
13:25Can we go over this gap?
13:27I want to see it.
13:29It looks like we can go over it.
13:30It's amazing.
13:31Let's do our best.
13:33Is there more in the back?
13:35It's getting bigger.
13:37There's more in the back.
13:38It's getting bigger.
13:40It's getting bigger.
13:45It's getting bigger.
13:46It's yellow.
13:48It's yellow.
13:49It's a wooden building.
13:50It's a wooden building.
13:51It's wide.
13:52I wonder if they built a ship.
13:53It's amazing.
13:54It's amazing.
13:56This facility is big.
13:58What is this?
13:59What is this?
14:01Was there a castle?
14:03There's a castle.
14:04There's a castle.
14:05There's a castle.
14:06It's amazing.
14:07It's connected to the side.
14:08It's not that old.
14:12It's not that old.
14:13I can see the height.
14:16It's pretty high.
14:17It's pretty high.
14:22On top of this huge building,
14:25they're exploring around the top of the mountain.
14:28They're exploring around the top of the mountain.
14:29They're exploring around the top of the mountain.
14:30I wonder if they can find anything around here.
14:35The building is big.
14:38It's hard to find from the top.
14:40What do you think?
14:41Can you see anything?
14:42It's hard to find things with a drone here.
14:47There are some gaps.
14:49Maybe we can get in from there.
14:51It's easy to get in.
14:53Can you see anything?
14:55Can you see anything?
14:56Can you see anything?
14:57Can you see anything?
14:58Can you see anything?
15:03I can see the stones piled up.
15:07There are a lot of blocks.
15:08There are a lot of blocks.
15:09It's big.
15:10What is this?
15:11It's big.
15:12It's big.
15:13It's a tall building.
15:15I found a tree.
15:17It's similar to the huge stone we saw earlier.
15:21It's tall.
15:22There are some holes in the bottom.
15:23It's different from the one we saw earlier.
15:24It's different from the one we saw earlier.
15:25What is this?
15:26Is there something inside?
15:27It looks like a fortress.
15:29It looks like a fortress.
15:30A fortress built on top of a mountain.
15:33I wonder what it's for.
15:37I heard there were pirates in the Seto Inland Sea.
15:41I heard there were pirates in the Seto Inland Sea.
15:42I heard there were pirates.
15:43I heard there were pirates.
15:44It's like guarding,
16:10A mysterious object is moving towards the bottom of the mountain.
16:15There is a huge building 5 meters high.
16:23And there is a big building on the top of the mountain.
16:31What kind of history did this island go through to become like this?
16:38In order to get information about the island, the staff went to the library in Kurashiki.
16:45I wonder if there is any information in this book.
16:49They asked for information about Kamimizushima in advance.
16:54There is a lot of information about the islands in Okayama.
16:59Is there any information about Kamimizushima in this book?
17:04By the way, do you know about Kamimizushima?
17:10There is one thing left.
17:15What is it?
17:17It's a refinery.
17:19There was a refinery on the island?
17:22Is it made of iron?
17:24There is a refinery in Kurashiki City.
17:32It's amazing.
17:34There was a big kiln.
17:36Was it such a big facility?
17:39There are so many buildings.
17:42This is a photo of the refinery.
17:45It's a huge refinery.
17:47You can see the smoke.
17:49You can also see the side of the ship.
17:51It's amazing.
17:54Kamimizushima is covered with a thin forest.
17:59There used to be three large chimneys.
18:03It was a large-scale copper refinery.
18:06It was more than 100 years ago.
18:08What is copper refining?
18:11It is the process of melting the ore containing copper at a high temperature to remove impurities and make high purity copper.
18:20It's not iron.
18:21The huge building in the forest may be a facility for copper refining.
18:29I think so.
18:31This building found on the mountain may be the chimney in this photo.
18:40The upper part is gone.
18:43According to the information, there was a copper refinery called Suzuki Refinery in Kamimizushima in 1903.
18:56It continued to operate until 1928.
19:01In the last century, there were about 700 people living in the refinery.
19:07Wow.
19:10This photo shows the workers of the time enjoying the annual island festival.
19:18Kamimizushima was once flourishing with copper refining.
19:22But it was more than 100 years ago.
19:26Is it difficult to find the former residents who lived on this island?
19:32The staff visited a company called Furukawa Kikai Kinzoku to get some information.
19:41What is this company famous for?
19:46Furukawa Kikai Kinzoku was founded in August of the same year as Mizushima Refinery.
19:55He has been the owner of Furukawa Kikai Kinzoku for 12 years.
20:01There may be some clues about this company.
20:06Are there any people who have heard about this company?
20:15Mr. Kikai Kinzoku quit the company in the 3rd year of the Showa era.
20:21He quit the company in the 3rd year of the Showa era?
20:24It's been about 100 years.
20:27It's been about 100 years since the company was founded, right?
20:31So, it's been about 120 years.
20:34I don't know.
20:38Is this the end?
20:42No, he can't give up.
20:46The staff checked the documents of the library again.
20:51They went to a certain place to get a clue.
21:04Hello.
21:06I'm Shirai, who sent you a letter on the Kasahi Broadcast.
21:10I'm Kikio.
21:12My father was there.
21:14Excuse me.
21:17Is there anything else in your father's photo?
21:24It's here, but it's not in the house.
21:27Can I see it?
21:29Excuse me.
21:32Sorry for the sudden visit.
21:35This is my father.
21:38This is your father?
21:40Yes, this is my father.
21:43Can I take a picture with you?
21:45There are a lot of old photos.
21:49In fact, the person in this photo is Mr. Shimizu Shichizou.
21:56He is the provider of the photo of the Seiren-jo that was found in the library.
22:01Did he take it?
22:03That's amazing.
22:06Mr. Shimizu must be a former resident.
22:09The staff thought so.
22:12We found out the address of his daughter, Sanae.
22:15We were able to hear her story.
22:19Did you work in Kamimizushima?
22:24I don't know much about it.
22:26I've never heard of it.
22:29You don't tell your children, do you?
22:31Sanae has never heard of her father's old story.
22:37But he showed us the other photos.
22:43Can I see your autograph?
22:52I'm sorry.
22:56Let's take a look at this.
22:58This is a magazine.
23:00I see.
23:03There are a lot of photos.
23:08This is Kamimizushima.
23:10I found it.
23:13I found it.
23:15He is a detective.
23:17He was a detective.
23:19There are a lot of old photos.
23:22I don't know why.
23:24There are a lot of photos I've never seen.
23:27I found it.
23:29I found it.
23:32This is a picture of Kamimizushima.
23:35I found it.
23:37He was a detective.
23:39He was a detective.
23:41I found it.
23:43This is a picture of Kamimizushima in the Seto Inland Sea.
23:47I found it.
23:49This is a picture of his childhood.
23:53I found it.
23:56This is a great picture.
23:59I'm glad I found it.
24:01I'm glad I found it.
24:04I'm glad I found it.
24:06I didn't think Shizuo would be featured here.
24:09He was the most surprised.
24:12No one in his hometown knows about Shizuo.
24:15That's right.
24:17There are a lot of photos.
24:19This is a picture of his childhood.
24:21I found it.
24:23There are a lot of photos I've never seen.
24:26This was taken around 1944.
24:30There is a connection between the times.
24:32There is a connection between the times.
24:34This was taken from the sea.
24:36This was taken from a boat.
24:38This was taken from a boat.
24:40He was not a fool.
24:42He was happy because he was a detective.
24:46He was happy because he was a detective.
24:50I found a picture of a person who lived in Kamii's Island.
24:57I found it.
25:03I found it.
25:06His name was Shimizu.
25:09This is great.
25:12This was its specialty.
25:14I found a great picture.
25:16This was fantastic.
25:18According to the memo, Shimizu is written by one of these two boys.
25:24Which one is your father?
25:25My father?
25:26Yes.
25:28This one.
25:29I don't know.
25:32I don't know.
25:33He looks like his grandson.
25:37There was also a newspaper article in addition to the photo.
25:42Shimizu Shizuo graduated from the elementary school on that island.
25:48He was 76 years old at that time.
25:50He graduated from the elementary school.
25:56Apparently, Shizuo was born on Kamimizu Island and graduated from the elementary school on the island.
26:04This is the image of Kamimizu Island that I saw in my dream.
26:07This is the image of Kamimizu Island that passed half a century and 50 years.
26:11This is the day I visited.
26:12It was in the 53rd year of the Showa era.
26:15In the 53rd year of the Showa era, he visited the island for the first time in half a century.
26:20He left a picture of the island with his classmates and a nostalgic landscape.
26:27Is this a bird?
26:30This is a book called Memories of a Childhood Day.
26:34This is Shizuo's notebook.
26:37Let me see.
26:40The dragon king, Ujigami, is enshrined on the east side of the island.
26:45The dragon king was a god of water.
26:48He was a worshiper of rain.
26:50He often visited Kurashiki, Kojima, and Kagawa.
26:54That's amazing.
26:55He came here to worship the rain.
27:00When I looked up the data,
27:04In 1282, the Kamakura period,
27:08it was recorded that a ritual of worshipping the rain was held on Kamimizu Island.
27:17When a monk in Taigan held a ritual of worshipping the rain for a week,
27:25it rained for a whole day.
27:29The one who made the rain fall
27:33was the dragon king who was worshipped on this island.
27:42Is there any trace of the shrine where the dragon king was worshipped on Kamimizu Island?
27:54I'm glad that the shrine is still there.
27:57I'm glad that you're happy.
27:59Thank you, Shizuo.
28:01Thank you very much.
28:03That photo is amazing.
28:05It's a great document.
28:08It's a very important document.
28:10And there's a god.
28:12The dragon king.
28:13The god of water.
28:14I'm curious about that.
28:16The dragon king.
28:17The island gradually looks like a dragon.
28:21In addition,
28:23from the historical data storage room, which is familiar with the history of Kurashiki City,
28:29we received information that valuable data of Kamimizu Island had been found,
28:34so we rushed there.
28:36Mr. Yamashita.
28:37Hello, Mr. Yamashita.
28:38Thank you very much.
28:41This is a town map of Shimotsui.
28:44Wow.
28:45What is this?
28:46What is this?
28:48What is written here?
28:50It's been left here for about six years.
28:57This is a map of Mizushima at that time.
29:02It's amazing.
29:04It's written here.
29:05This is the site of the factory.
29:07It's clearly written.
29:09This is also written here.
29:10This is a map of the beach.
29:12There was something on this side, too.
29:17It's written that the house is on this side.
29:20Oh, people lived here.
29:22On the east side.
29:23This is the house on the east side.
29:27Oh, I see.
29:28The factory and the house are located between the mountains.
29:33It's a little far.
29:35It's a little far.
29:36Was there a road?
29:38It's written that people lived in the tunnel.
29:41Tunnel?
29:42There was a tunnel here.
29:44As far as I remember.
29:46As far as I remember, the mountain in the middle was a tunnel.
29:52What?
29:53It's a tunnel.
29:55Yes, it's a tunnel.
29:56Is it okay?
29:57Yes, that's why there was a road.
30:02There was a tunnel between the factory and the house.
30:07It's a tunnel in the Daiko period.
30:08It's amazing.
30:09It's quite far.
30:12A new fact was found here.
30:16Kamimizushima was divided into the factory area and the taxi area.
30:24In the meantime, a tunnel was dug in the mountain to make it easier to go because there was a small mountain 51 meters high.
30:34How many kilometers is that?
30:37In addition.
30:38I see.
30:39This is the map of the area.
30:41Let me see.
30:43This is the factory area.
30:47It's on the other side.
30:49There is an opening here.
30:52It's not here.
30:54This is the factory area, so there was only this area.
30:57They built this area and spread it out.
30:59They built this area and spread it out.
31:01It looks like an island.
31:04It doesn't look like an island.
31:06It's spread out.
31:08There is a flat and long part.
31:12I see.
31:13There was only this area.
31:17I wonder what that is.
31:19This place, which was a small factory area on the old map.
31:25If you compare it with the current map, you can see that the peninsula is increasing.
31:31This black part must have been a place where it was later filled.
31:38When I looked into it, it seems that a large amount of iron-containing scum called slabs comes out by the refining of the road.
31:48It seems that it was filled by putting it on a truck like this and throwing it away.
31:55It seems to have become a peninsula.
32:00That's why it looks like a melted rock.
32:03I thought it was a desert.
32:05It's refreshing.
32:07I understand various things.
32:09It's interesting.
32:10This is a national survey.
32:12It's true.
32:14After this, they landed on Kamimizushima and investigated the area.
32:22Is there a tunnel that connects Seirinjo and Takuchi?
32:27Is there still a trace of the god of rain, Yu-Oh?
32:33Furthermore, what is the identity of the truck in the experiment?
32:39After this, they will finally land.
32:47They finally set off for Kamimizushima.
32:51The number of members has increased.
32:55They asked the members of the Okayama Forestry Association for cooperation to destroy the tree covering the island.
33:04The strategy is as follows.
33:06Based on this map, the A team in the factory area will be divided into the B team in the Takuchi area.
33:14I want to play a game like this.
33:18Well, let's land.
33:23The A team will investigate the chimney in Seirinjo and the truck in the experiment.
33:29It's interesting.
33:32The B team will search the tunnel and find traces of the god of rain, Yu-Oh.
33:41Let's land.
33:48I think this is the longest tunnel that connects the factory area.
33:58They start to search the tunnel.
34:12There is something.
34:17This looks like a block of a huge building.
34:21I see.
34:24Was there a building here?
34:27I think so.
34:28There is a piece of a river.
34:30Really?
34:31This way.
34:36It's true.
34:37I think it's broken.
34:40Was there a house here?
34:42Was it naturally broken?
34:45I think so.
34:47I found something.
34:49Did you find something?
34:53There is something like a hole.
34:56It's amazing.
34:58This is a trace of a house.
35:02It's a well.
35:03It's a well.
35:04It's a well.
35:08It's true.
35:09It's solidified with concrete.
35:15It's true.
35:16It's solidified with concrete.
35:18It's true.
35:19It's solidified with concrete.
35:25It's amazing.
35:27I found a well.
35:29I found traces of people's lives.
35:36About 100 years ago...
35:38It's a good place.
35:41There was a house like this.
35:44It's good.
35:46It's a river.
35:48However, the tunnel hasn't been found yet.
35:55On the other hand, Eihan heads to a chimney-like building.
36:00He has to climb a steep cliff on the top of the mountain.
36:08The angle of the slope is quite...
36:11It's a steep slope.
36:13That's why it's a tunnel.
36:15Rather than climbing this...
36:20Can you see something?
36:22Did you find it?
36:26I found it.
36:33Let's take a look around.
36:38I can go inside.
36:42Is this a chimney?
36:45It's a chimney.
36:48Let's go inside.
36:51Let's go inside.
36:52It's amazing.
36:54It's beautiful.
36:55It's a beautiful chimney.
36:59It's amazing.
37:04It was a chimney after all.
37:07If you look at it like this...
37:09This building seems to be in the middle of three chimneys.
37:18On the other hand, Eihan...
37:23He finds something interesting on the map.
37:27There's a pilot here.
37:30I see.
37:32A mysterious mark carved in the square.
37:36What is this for?
37:41Let's go see it right away.
37:46What is this?
37:49According to the map, it might be around here.
37:54It doesn't look like it's buried.
37:59Let's go.
38:09It's not here.
38:10It's not here.
38:13It's a little further ahead.
38:15It's a little further ahead.
38:20There must be a mark because there's something here.
38:30It looks delicious.
38:39I found it.
38:40Really?
38:41Did you find it?
38:42Did you find it?
38:43I'm sure it was sold.
38:44I'm sure it was sold.
38:46What is it?
38:52It's a squid.
38:54He's still opening his mouth wide.
38:57What is this? Is this a tunnel?
38:59It's a tunnel.
39:00It's amazing.
39:01It's amazing.
39:03It's a tunnel.
39:06He found the entrance to the tunnel where the mark was.
39:13It's amazing.
39:17It's going deep.
39:20Can we go in?
39:26If there were bats here...
39:27Bats?
39:28Yes.
39:29I'm sure they'd be surprised.
39:30Are there bats here?
39:31They like this kind of place.
39:32Really?
39:33If there are people here, they'll come out at once.
39:35Because there haven't been people here for decades.
39:38So, we're going to be careful and investigate with a drone.
39:43We're going to attach a small light device to the drone and fly it.
39:47With a drone.
39:49Let's go.
39:50Yes, please.
39:52Let's see what's going on in the tunnel.
39:57I'm looking forward to seeing what's going on in the back.
40:03It's pretty dark inside.
40:06They're digging hard.
40:07But so far, there don't seem to be any bats.
40:12It's not stable.
40:14Is that so?
40:15But the stones are broken.
40:18Let's take a look at the wall.
40:20Let's see what it looks like.
40:23Thank you very much.
40:24It looks like a tunnel made of stones.
40:30I'll be back.
40:31Okay.
40:33When the drone flies in a dark space, the sensor's function decreases.
40:38It seems that the aircraft will shake.
40:40So...
40:44I'd like to use this camera.
40:47Are you okay?
40:49It's really...
40:52wide.
40:54I can stand on it.
40:58At that time...
41:00You can stand on it.
41:02I think it was as high as I could walk.
41:11There's trash.
41:13Why is there trash?
41:14There's trash.
41:15The trash is completely...
41:19The sea is full of trash.
41:23It's buried.
41:24I can't go there.
41:29The wind is blowing it away.
41:32I didn't know it would be like this.
41:35I can't see the bottom.
41:44I've come to the bottom.
41:48It's blocked.
41:51It's not blocked by trash.
41:55It's blocked by a rock.
41:57A rock?
41:58It looks like a ladder for safety.
42:01If you look at the entrance from here...
42:06It's far away.
42:10It's about 15 meters away.
42:14It's about 15 meters away.
42:21So, people more than 100 years ago...
42:24were able to find evidence of life in this place.
42:30That's amazing.
42:33Meanwhile, the police in the factory area...
42:36came to investigate the truck during the experiment.
42:41It's spinning.
42:42Who put it there?
42:44It's spinning.
42:45I found it.
42:46It's here.
42:50It's not here 100 years ago.
42:52Look.
42:55It says, it's under experiment.
42:57What kind of experiment is it?
42:59Let's go inside.
43:01What would people do if they saw it?
43:04They would take a nap.
43:07That would be scary.
43:10It looks like an experiment.
43:18It's moving.
43:19The lamp is on.
43:22It's shining.
43:24It's the sun.
43:27The sun.
43:32It says wind power.
43:35Wind power generation.
43:39What does that mean?
43:40Who did this?
43:41Why?
43:42Someone must have stored electricity here.
43:49An engine pump.
43:53Is this an engine pump?
43:54Yes, it is.
43:55This is it.
43:56I wonder if it was filled with water.
43:59What kind of experiment was going on here?
44:05The staff later assumed that this wind power system was a weather-related experiment.
44:13They asked the local weather station in Okayama.
44:17What was their answer?
44:20It's not a weather station, so we don't know for sure.
44:26They tried to go to other locations.
44:30Unfortunately, they didn't know the details of the truck.
44:39The rest is a search for the traces of the dragon king.
44:55Yes.
44:56What is it?
44:57There is a shrine.
44:59There is a shrine.
45:00There is a shrine.
45:03Is this shrine related to the dragon king?
45:10We found a shrine.
45:14But it's hard to tell just by looking at it.
45:20Then, they went a few meters further.
45:28This is a staircase.
45:31This is a staircase.
45:33It's a stone staircase.
45:35It's a staircase.
45:36It goes all the way over here.
45:39It's a staircase to go to the shrine.
45:42It's a stone staircase.
45:43It's a stone staircase.
45:48Yes.
45:50Did you find anything?
45:52We found a shrine.
45:53What?
45:54We found a shrine.
45:56We found a shrine.
45:57We found a shrine.
45:58It's amazing that we found a shrine.
46:01They went on to find another shrine.
46:12Did you find anything?
46:13We found a shrine.
46:14We found a shrine.
46:15We found a shrine.
46:16It's amazing that we found a shrine.
46:18What did you find?
46:19It must be a shrine.
46:21A shrine.
46:22A shrine.
46:27Look.
46:28Wait, wait, wait, wait.
46:30We found something amazing.
46:33This is amazing.
46:35It says Mizushima Employee here.
46:39And there's a Komainu.
46:43Komainu.
46:44This Komainu is cool.
46:46This is a shrine.
46:52I like this Komainu.
46:53I like this Komainu.
46:54Two of them.
46:55There's a character on it.
46:58It's the Dragon King.
46:59Did you find it?
47:00It's the Dragon King.
47:01I found it.
47:04The rain-loving god has been around since the Kamakura period.
47:09They were able to find the Dragon King's shrine.
47:14According to the research,
47:16this shrine often rained on the day of the shrine visit.
47:22It's amazing.
47:25The shrine must have been worshipped as a new god.
47:30It's hidden.
47:32It was 100 years ago,
47:35but Kamitsushima didn't bury everything.
47:39It left a little trace of it.
47:44It may be a message from the island
47:48that we shouldn't forget how people lived in the past.
47:54There were so many stories on the island
47:57that no one in the town was interested in.
47:59There were so many.
48:01When you feel the living proof of people's lives,
48:04you become very attached.
48:06Even though no one knew anything,
48:08I'm glad I was able to see
48:12how people's lives were connected through research.