Prairie Dog Town Fork of Red River: Agatized Wood Rockhounding in Armstrong County, Texas
Updated June 2026
Prairie Dog Town Fork of Red River is a mapped rockhounding spot in Armstrong County, Texas. Reported finds include agatized wood. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Prairie Dog Town Fork of Red River in Armstrong County, Texas
Quick details
- Access
- Public area
- County
- Armstrong County
- State
- Texas
- Nearest road
- State Highway 207
- Coordinates
- 34.83352, -101.41405
Geology at Prairie Dog Town Fork of Red River
This spot sits on Terrace deposits, mapped as sand that formed within roughly the last 3 million years. Petrified wood typically travels as tough float, and worked gravels like these are exactly where weathered pieces tend to collect.
- Mapped unit
- Terrace deposits
- Age
- 3 Ma to present (Pleistocene to Holocene)
- Rock types
- sand
- Elevation
- 2,470 ft
Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.
Best time to visit Prairie Dog Town Fork of Red River
Best months: September to May. Typical highs run 96°F in midsummer and 55°F in midwinter, with winter lows near 25°F. Summer heat here is intense, so carry more water than you think you need and work the early morning.
Climate normals: NOAA 1991-2020 monthlies, VIGO PARK station (13 mi away), adjusted for elevation.
Land & collecting status
Generally open to casual rockhounding
Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.
Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.
Sources & verification
Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.
State guidance last verified:
- Texas Parks and Wildlife Department
- Bureau of Economic Geology — Texas geology
- Big Bend National Park — Rules
- Community submissions reviewed against published agency rules
Found at Prairie Dog Town Fork of Red River
Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.
Nearby rockhounding spots
Other rockhounding spots within driving distance of Prairie Dog Town Fork of Red River.
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More rockhounding in Texas
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