Au Train Bay beach

Where: Michigan · North America · approx. 46.44, -86.84 (vicinity only)

Why this spot: Sand and gravel bay on Superior between Munising and Marquette, long picked after storms

What turns up: agate, banded rhyolite, jasper

Access: Open / legal.

Public shoreline on Hiawatha National Forest frontage allows casual hand collecting.

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