Marathon ON: Pebble Beach, Lake Superior

Where: Canada · North America · approx. 48.71, -86.37 (vicinity only)

Why this spot: Rockhounding locality: storm-rolled cobble beach on Superior's north shore known for Lake Superior agates and sodalite-bearing syenite that fluoresces (yooperlites)

What turns up: Lake Superior agates, jasper, granite and basalt pebbles, fluorescent syenite after dark

Access: Clean.

Municipal beach in Marathon with no posted collecting ban: hobby quantities of loose beach pebbles are customary; note this is not a provincial park (parks like Neys nearby prohibit collecting)

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