Where: West · North America · approx. 42.92, -111.0 (vicinity only)
Why this spot: A long-running Green River fee quarry near Thayne, splitting 18-inch layer shale for fish plates.
What turns up: Green River fish fossils
Access: Permission required.
Commercial fee-dig site: pay to dig and keep what you find. Hours are seasonal, call ahead and check what tools and buckets are provided.
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.