Where: Texas · approx. 28.71, -100.5 (vicinity only)
Why this spot: 1880s+ Sanborn-mapped town on The Rio Grande, at the river crossing opposite Piedras Negras
What turns up: Riverbank and old Fort Duncan dumps with 1880s to 1890s border-trade and military bottles, Mexican ceramics, and blob-top beers; privy pits behind the crossing's commercial row
Access: Gray area.
The Rio Grande is a navigable boundary river; the state owns the bed to the gradient boundary and the International Boundary and Water Commission oversees the channel, so river-margin digging is restricted and federally sensitive. The Antiquities Code of Texas protects state land and the Fort Duncan area. Private lots need the owner's 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.