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Mountains Made of Fossils

The peaks in Guadalupe Mountains National Park—some of the highest in Texas—are made of a well-preserved fossil reef formed more than 250 million years ago.


NASA Earth Observatory image by Wanmei Liang, using Landsat data from the U.S. Geological Survey. Photo of El Capitan courtesy of NPS. Photo of McKittrick Canyon courtesy of Matthew Lee High. Story by Lindsey Doermann.

Published April 22, 2025
Data acquired July 7, 2024

Sources:
Landsat 9 > OLI-2
Photograph
Collection:
U.S. National Parks