01 / Hoshikuso Pass
Shafts about 3 m across and 3 m deepoverlap in layers at this mining site.

A National Historic Site, designated on January 29, 2001. According to the Agency for Cultural Affairs, some 200 crater-like hollows about 10 m across have been confirmed, with shafts about 3 m in diameter and 3 m deep overlapping in layers: the remains of mining for raw obsidian.
- National Historic Site, designated January 29, 2001
- Some 200 hollows, about 10 m across
- Shafts about 3 m in diameter and 3 m deep