Greybull — Rockhounding in Big Horn County, Wyoming

Greybull is a mapped rockhounding spot in Big Horn County, Wyoming. Reported finds include gastroliths, petrified dinosaur bones, fossils. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Big Horn County
State: Wyoming
Coordinates: 44.64648, -107.80699

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.

Found at Greybull

Each chip links to all spots in the U.S. that produce that material.

Gastroliths
Petrified Dinosaur Bones
Fossils

Nearby rockhounding spots

Other rockhounding spots within driving distance of Greybull.

Greybull FAQ

Where is Greybull?+

Greybull is in Big Horn County, Wyoming, at 44.64648, -107.80699.

What rocks and minerals can you find at Greybull?+

Greybull is reported to produce Gastroliths, Petrified Dinosaur Bones, Fossils.

Is collecting allowed at Greybull?+

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. Always confirm current rules with the managing agency before a trip.

How do I get to Greybull?+

Open the directions link to navigate to 44.64648, -107.80699 in Google Maps. Some spots are remote — check road conditions before driving out.

More rockhounding in Wyoming

See all 82 Wyoming spots →

Open Greybull on the map

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