Where: Michigan · North America · approx. 46.66, -90.05 (vicinity only)
Why this spot: Gravel beach at the Black River mouth on the Gogebic shore
What turns up: agate, banded volcanics
Access: Open / legal.
National forest recreation area allowing casual hobby 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.