Kuroshima Island and Taijima Island
Kuroshima Island and Taijima Island are both made of Kuroshima Island conglomerate layer containing gravel of Kumano acidic rocks. There are many caves in Kuroshima island where you can see the traces of lugworm nests. Taijima Island looks like a sea bream when you see it from the shore, with a little hole for an eye.
- Kushimoto Town (Kumanonada), Higashimuro-gun, Wakayama