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Where to Find Thundereggs in Oregon

Oregon has 19 mapped collecting spots that report thundereggs, spread across 6 counties. The largest share sits in Crook County with 7 spots. 7 of the spots are on land mapped as publicly accessible, and 3 are fee-dig sites.

Spot list checked against source data on April 1, 2026.

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Every thunderegg spot we track in Oregon

Standout thunderegg spots in Oregon

Hand-picked from the full list above, with the reason each one earns a trip.

Best counties for thundereggs in Oregon

Ranked by the number of mapped thunderegg spots. County links open the full rockhounding page for that county.

Before you go

Read the thundereggs identification guide so you know what a keeper looks like in the field: Thunderegg in the encyclopedia.

Thundereggs in Oregon FAQ

Where can you find thundereggs in Oregon?+
The mapped spots concentrate in Crook County, Jefferson County, and Lake County. Every spot on this page is on the map, and each spot's own page has its coordinates and access notes.
How many thunderegg spots are mapped in Oregon?+
19 spots across 6 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.
Is it legal to collect thundereggs in Oregon?+
Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 7 of the 19 mapped spots here sit on land marked public, and 3 are fee-dig operations where you pay for access and keep what you find. Always confirm current rules with the managing agency before you dig.

More minerals to hunt in Oregon

Hunt thundereggs in Oregon with the map in your pocket

RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.

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