Image 1 of 1
Fulgurite from the Arizona-Sonora Desert Museum in Tucson, Arizona. A fulgurite is formed when lightning penetrates the sandy soil, often fusing it into the shape of the electricity's path. A witness who saw lightning strike the ground in Avra Valley, Arizona dug up this fulgurite. Held by Anna M. Domitrovic, Assistant Curator of Earth Sciences at the Desert Museum. (1992)