There are several locations around China Lake area near Wingate that produced thundereggs. The Lead Pipe Spring site is known for the thundereggs with brick red to brown with bright bluish agates sometimes with shadowing effects. Since the sites are located on navy/air force lands, the collecting is not allowed. But there had been some guided collecting trips arranged with a local navy club as according to Paul "GeodeKid" Calburn's Autobiography books in the past. It's not known if such tours are still ongoing and there was a big pit where Germans mined large thundereggs with agate cores for carving purposes.