Where: Montana · approx. 45.83, -109.95 (vicinity only)
Why this spot: 1900s+ Sanborn-mapped town on Yellowstone River at Boulder River mouth
What turns up: 1880s-1910s wool-shipping, saloon and mercantile bottles and dump glass along the Boulder and Yellowstone confluence flats
Access: Gray area.
River bed below the ordinary high-water mark is state owned and removing historic artifacts from it is restricted. Montana's stream-access law lets you use the water and bed up to the high-water mark for recreation but does not authorize digging or removing artifacts. The banks and townsite uplands are usually private, so get the landowner's permission. Where the ground is federal (BLM or Forest Service), the Archaeological Resources Protection Act bars disturbing sites over 100 years old without a permit.
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.