Thielsen Summit Fulguirites
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A fulgurite on the summit of Mount Thielsen (the black glassy spot just to the left of the camera's shadow). This is not one of the better examples of fulgurites on the summit, just to the left a large branching tube is present that even warped the summit benchmark, but I didn't think to photograph it. The Lathrop Glacier is present in the background.
Image ID: 699352
Object Title: Thielsen Summit Fulguirites