Where: Midwest · North America · approx. 47.0, -91.5 (vicinity only)
Why this spot: Rockhounding locality: Lake Superior agates (state gem)
What turns up: Lake Superior agates (state gem)
Access: Open / legal.
Loose beach material is generally collectable; do not dig protected cliffs or take from protected sites. Confirm local rules.
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.