Where: Japan · Asia · approx. 36.45, 139.45 (vicinity only)
Why this spot: Rockhounding locality: bedded Mn deposit
What turns up: rhodochrosite, rhodonite, tephroite, manganese oxides
Access: Gray area.
Closed mine; dumps on forest land, permission advisable.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.