It is a sea cave and a sea tunnel of 200 meters long. It is the biggest in the East Asia.
A sightseeing boat can enter the cave, but in case of rise or fall of the tide or wave,
the boat cannot go through the cave, so it is said that if a boat can go through it is lucky.
Nishinoshima Island
Access and Getting Around
3 km from Akao Observatory
CHUGOKU [ Oki Islands ]
-Sea View
It is reachable from the Saigo Port. Here is Oki Airport, too.It is the largest island in Oki Islands, a circular volcan...
CHUGOKU [ Oki Islands ]
-Sea View
It is a strangely-shaped rock of 20 meters high,it seems to be piled up at sunset which looks like a candle being lighte...
CHUGOKU [ Oki Islands ]
-Sea View
An inlet spreads out along the shore, and a trail is prepared,it is a good hiking trail while seeing the eroded beach.Th...
CHUGOKU [ Oki Islands ]
-Sea View
It is the origin of the name that rocks constituting the shore are white.The islands of different sizes are scattered he...
CHUGOKU [ Oki Islands ]
-Specific Nature
It is a mysterious scene that two waterfall run down from the two side of the shrine on the rock cliff.Walking on the tr...
CHUGOKU [ Oki Islands ]
-Specific Nature
There were two shelters through the cliff of the shore, which were then dug with a chisel and became tunnels.Tourists wi...
CHUGOKU [ Oki Islands ]
-Sea View
It is the central part of Dozen Island, and attractive for the caldera topographyand the changeable shore topography wit...
CHUGOKU [ Oki Islands ]
-Sea View
It is affected strongly by the erosion of the Sea of Japan, so cliffs, precipices and cavesextend to the east and west f...
CHUGOKU [ Oki Islands ]
-Sea View
The vast precipice is 257meters high as if it is cut with a huge knife perpendicularly and is one of the best sea cliff ...
CHUGOKU [ Oki Islands ]
-Sea View
The rock like a bridge called ‘Tsutenkyo ’ is formed in the central part of the huge rock by the erosion,leading to the ...
CHUGOKU [ Oki Islands ]
-Sea View
It is on a peninsula in the southwest of Kuniga Coast, and the view seen form the topmakes feel the large scale of the e...
CHUGOKU [ Oki Islands ]
-Sea View
It is in the southwestern part of the island and on the observatory the inner seaand the outer sea of the caldera are se...
CHUGOKU [ Oki Islands ]
-Sea View
The contrast of the red sheer cliff and the sea is beautiful.It is the highlight of Nakanoshima. Various volcanic ejecta...
CHUGOKU [ Oki Islands ]
-Sea View
Nakanoshima Island is unusual that not only the wonderful shoreline beauty but also rural scenerycan be seen on the isla...
CHUGOKU [ Oki Islands ]
-Sea View
Chiburijima Island is the smallest among four islands in the southwestern part of Dozen Islands.It is the caldera sea be...
CHUGOKU [ Oki Islands ]
-Sea View
Sekiheki is a highlight of Chiburijima Island where a cliff of the chestnut brown extends.The dramatic scene at sunset i...
CHUGOKU [ Oki Islands ]
-Sea View
Mount Akahage is a round mountain of 324 meters above sea level on the top of which not only Oki Islandsbut also the mai...