Gratiot River County Park

ROCKHOUNDING OPEN / LEGAL DOCUMENTED

Where: Michigan · North America · approx. 47.33, -88.41 (vicinity only)

Why this spot: River-mouth cobble beach on the Keweenaw north shore

What turns up: agate, epidote, datolite

Access: Open / legal.

County park with customary hand collecting.

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.