Where: Nebraska · North America · approx. 42.9, -103.6 (vicinity only)
Why this spot: Oligocene White River gravels and badlands
What turns up: Prairie agate, Fairburn type agate, and chalcedony in the surface gravels
Access: Open / legal.
National grassland; casual hand collecting of rock and common agate for personal use is allowed (no vertebrate fossils).
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.