“... Baby Doe Thundereggs can reveal a beautiful starshaped agate-cavity in red matrix. Baby Doe Thundereggs were found in the north end of the Calico Hills near McDermitt, Oregon. The bed they were collected in was discovered by thunder egg expert Paul “Geode Kid” Colburn in the 1970ies...”

From the presentation-programm “These Fabulous Thundereggs”, published by Doug Moore, Stevens Point, 2005