The Hay Creek Bed, located in Crook County, Oregon, is a thunderegg site known for producing nodules with understated yet beautiful agate interiors. Eggs from this bed typically feature soft grays, tans, and occasional bluish tones, often accented with subtle moss or plume inclusions. The rhyolite matrix is usually light in color and weathered, giving the nodules a classic high-desert appearance. While not as flashy as material from some neighboring beds, Hay Creek thundereggs are valued for their gentle patterns and reliable cutting quality, making them a favorite among collectors who appreciate refined, natural beauty.
Rocks of the Cascades – Thundereggs, Tools & Tradition