Thorofare Wilderness: Agate & Jasper Rockhounding in Teton County, Wyoming

Updated June 2026

Thorofare Wilderness is a mapped rockhounding spot in Teton County, Wyoming. Reported finds include agate, jasper, opalized wood, silicified wood. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Permission required
County: Teton County
State: Wyoming
Nearest road: Fox Park-Yellowstone Trail
Coordinates: 44.12335, -110.11690

Geology at Thorofare Wilderness

This spot sits on Undivided surficial deposits, mapped as unconsolidated siliciclastic 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: Undivided surficial deposits
Age: 3 Ma to present (Pleistocene to Holocene)
Rock types: unconsolidated siliciclastic
Elevation: 7,850 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.

Land & collecting status

Permission required before collecting

Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.

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: April 1, 2026

BLM Wyoming
Wyoming State Geological Survey
Fossil Butte National Monument
Community submissions reviewed against published agency rules

Found at Thorofare Wilderness

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 Thorofare Wilderness.

Across the state line from Thorofare Wilderness

Thorofare Wilderness is close enough to the Wyoming border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Thorofare Wilderness FAQ

Where is Thorofare Wilderness?+

Thorofare Wilderness is in Teton County, Wyoming, at 44.12335, -110.11690. Nearest road: Fox Park-Yellowstone Trail.

What rocks and minerals can you find at Thorofare Wilderness?+

Thorofare Wilderness is reported to produce Agate, Jasper, Opalized Wood, Silicified Wood.

Is collecting allowed at Thorofare Wilderness?+

Permission required before collecting. Requires landowner or agency permission before any collecting. Do not enter without explicit authorization. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Thorofare Wilderness?+

A rock hammer, sturdy gloves, and a padded bag cover petrified wood hunting. Most pieces are surface float, so walking slopes and washes beats digging.

How do I get to Thorofare Wilderness?+

Open the directions link to navigate to 44.12335, -110.11690 in Google Maps. The nearest road is Fox Park-Yellowstone Trail.

More rockhounding in Wyoming

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Open Thorofare Wilderness on the map

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