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Believed by some to be an above-water portion of the mysterious undersea ruins (different from the Yonaguni Monument) because it is shaped almost like a sort of stairway. The strangely-shaped rocks of Gunkaniwa can be easily seen from here. Also, there's a rock here with some writing on it which is mysterious. It bears little resemblance to kaida-dii, the island's indigenous writing system, and some have even suggested that it is Phoenecian.
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軍艦岩
The "Battleship Rock", about 2 km south of Agarizaki, is a series of peculiarly-shaped reef rock formations. Supposedly, the main rock bears a close resemblance to the shape of a battleship, and that's how it got its name. It can be observed from Sanninudai.
立神岩、タティガミイワ
The "Standing God Rock", at the southeast tip of the island, is also noted for the underwater ruins nearby (see Do, some with what appears to be indigenous writing. Also, it's considered a spiritual site for followers of Yonaguni's indigenous traditional religion.
人面岩
Jinmen-iwa is a big rock in the forest that resembles a human face. Requires 12-20 minute hike up the hill by a forest trail. No parking, nearest parking is at Tatigami-iwa.