Where: Texas · North America · approx. 26.9, -99.28 (vicinity only)
Why this spot: Rio Grande terrace gravels around Falcon Reservoir carrying agate and jasper
What turns up: agate, jasper, petrified wood, chert
Access: Gray area.
Most terrace ground is private ranchland; shoreline access rules vary, ask locally.
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.