Where: North Dakota · North America · approx. 47.3, -102.5 (vicinity only)
Why this spot: Paleocene Golden Valley silicified sediment
What turns up: Knife River flint, a translucent brown to black tool grade chert
Access: Gray area.
Weathers out of hills and fields; collect on public land or with permission.
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.