Where: West · North America · approx. 46.5, -105.8 (vicinity only)
Why this spot: Rockhounding locality: Montana moss agate
What turns up: Montana moss agate
Access: Open / legal.
Open public collecting under BLM or public-land casual-use rules: reasonable personal amounts, no claim-jumping, no resale. Confirm current status before you go.
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.