Where to Find Thundereggs in 2025
As we wrap up an epic 2024 season and rockhounds prepare for 2025, we pulled together a list of the most popular Thunderegg sites in the United States where you’re guaranteed to find the infamous eggs!
Richardson's Rock Ranch in Madras
Harney County, Southeastern Oregon: Managed by the Bureau of Land Management, these public land sites offer opportunities to find thundereggs along with geodes, petrified wood, jasper, and agate. Notable spots include areas around Mann Lake and Pike Creek, and further south, Borax Lake. Harney County on Google Maps.
Ochoco National Forest, Central Oregon: A favorite among rock collectors, this National Forest has both private pay-to-dig and free public land sites for thunderegg hunting. White Rock Springs and White Fir Springs are notable public locations. Ochoco National Forest and Richardson's Rock Ranch in Madras is a popular private pay-to-dig site.
Little Naches Riverbed, Washington: Located northwest of Yakima, this site on public lands is known for its high density of thundereggs and crystals. Google Maps.
Black Agate Hills Geode Bed, Southern California: Known for its unique thunderegg formations, this site in the lower Sonoran Desert landscape produces larger thundereggs with bold and rich core deposits. Black Agate Hills Geode Bed on Google Maps.
Rockhound State Park, New Mexico: Located near Deming, this state park supports the collection of rocks and minerals including thundereggs. It is popular for rock and mineral enthusiasts. Rockhound State Park on Google Maps.
These locations are well-known among thunderegg enthusiasts for their abundance and variety of thundereggs, offering both amateur and experienced collectors a chance to uncover these geological treasures.
If you can’t make it to any of these locations but still want to get your hands on some Thundereggs, don’t worry. We’ve got you covered with raw uncut and cut/ polished Thundereggs for sale on our Etsy shop!
