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Metatron / CC BY-SA 3.0
Yonaguni Monument
与那国海底地形Okinawa
A mysterious underwater rock formation off Arakawabana Cape on Yonaguni's south coast, discovered by divers in 1986 -- sharp geometric terraces and stair-like edges that have fueled decades of debate over whether it is natural or man-made. Reachable only by guided dive, 5-25m down. Typhoon season runs roughly June to October, and a passing storm can cancel ferries, flights and all marine activity across the islands at a day's notice — check the forecast before you rely on this stop.
- Best season
- Spring
- Crowd level
- Hidden gem
- Rating
- 4.6· 340 reviews
- Admission
- Underwater site with no admission; viewing requires separately paid glass-bottom boat or dive tour. Yonaguni tourism info.
- Nearest station
- No rail access — dive/glass-bottom boat off Yonaguni Island (fly to Yonaguni Airport, ~30 min flight from Ishigaki, or ferry from Ishigaki)
Tags
islandswimmingculture
Location
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