Earth Pillars
| View Cart ⇗ | Info
Earth pillars protected by a cap of rock and due to rain erosion, Colorado.
Source
Amadeus W. Grabau A Textbook of Geology (Boston: D.C. Heath & Co., 1920) 411
Downloads
1639×2400, 1.0 MiB
699×1024, 161.1 KiB
437×640, 79.8 KiB
218×320, 25.2 KiB