Figure 5.9
A fulgurite. Fulgurites are produced when heat melts sand into glass as lightning travels through the ground. This fulgurite is about 35 cm (14 in) long.(© Stan Celestian)
Figure 5.9
A fulgurite. Fulgurites are produced when heat melts sand into glass as lightning travels through the ground. This fulgurite is about 35 cm (14 in) long.