01 / Obsidian
Kannonzaki's cliffs are a national Natural Monument.Its obsidian reached Tanegashima and Osaka.
The cliffs at Kannonzaki (観音崎), formed by volcanic activity, are Himeshima's obsidian source. The pale cliff face rises 40m and stretches 120m, said to be the only obsidian source in the Seto Inland Sea. Valued as toolmaking stone, it has been found at sites from eastern Kyushu to Tanegashima Island and Osaka. In 2007, it was designated a national Natural Monument.
- 2007: National Natural Monument
- 40m high, 120m wide cliff
- Reached Tanegashima and Osaka
