Where: Washington · North America · approx. 46.78, -119.9 (vicinity only)
Why this spot: Miocene basalt
What turns up: Carnelian and moss agate in the basalt scablands
Access: Gray area.
Mix of BLM, state and private; verify ownership before collecting.
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.