Rolling Thunder Bed

The Rolling Thunder Bed, located in Malheur County, Oregon, is a striking thunderegg site known for producing nodules with vivid, high-contrast agate interiors. Eggs from this bed often display bold reds, oranges, and purples, frequently accompanied by moss or plume inclusions that give the interiors a sense of motion and energy—true to the bed’s name. The rhyolite matrix is typically coarse and reddish, with medium to large, well-formed nodules that cut and polish exceptionally well. Rolling Thunder thundereggs are favored by lapidary artists and collectors alike for their dramatic color palettes and dynamic internal patterns.