Where: Michigan · North America · approx. 42.75, -84.76 (vicinity only)
Why this spot: Pennsylvanian sandstone and shale ledges along the Grand River
What turns up: fern and seed-fern impressions
Access: Gray area.
Park and ledge land; picking through fallen shale is customary, no hammering cliffs.
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.