Hill Annex Mine fossil program, Calumet

Where: Minnesota · North America · approx. 47.32, -93.28 (vicinity only)

Why this spot: Cretaceous marine seam exposed in an iron pit, opened to guided fossil hunts

What turns up: shark teeth, ammonite fragments, bivalves

Access: Licensed / permit.

Access only on organized park programs; check current operating status.

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.