Petroglyph Bed

The Petroglyph Bed, located in Wasco County, Oregon, is a thunderegg site noted for its distinctive agate interiors and unique external textures. Thundereggs from this bed often display soft grays, lavenders, and blues, with moss or banded patterns inside that are well-suited for cutting. What sets this bed apart is the matrix—often etched or naturally weathered in a way that resembles petroglyph carvings, giving the uncut nodules an eye-catching, ancient appearance. Collectors value Petroglyph Bed material not only for its subtle internal beauty but also for its sculptural, display-worthy exteriors.