![](http://www.alamy.com/thumbs/6/C44D3338-B9BB-4960-B748-358400366264/H601FK.jpg)
Fulgurite - natural glass-like tube formed by lightning strike on quartz-rich sand (Fulgur = Latin for thunderbolt)
Size: 3700px × 2457px
Photo credit: © PjrRocks / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: crystals, desert, fulgurite, fused, geological, geology, glass, lightening, lightning, mineral, mineralogy, quartz, rock, sample, sand, small, stone, tube