A strange rock that can be seen from the promenade of the Ima
saki kaigan, the west end of the island. There used to be two holes in the era of Showa 37, collapsed and became the current figure. Iwahara of the lava flow continues in the periphery, a great point to look at the sunset. You can see Onoharajima, also known as Mt. Sanbondake, off the coast.