Wikimedi'Òc

Columnar Basalt along Road DyeClan.com - panoramio.jpg - Panoramio upload bot

Narrows Basalt (Lower Pleistocene, 1.5-1.6 Ma) (Narrows of the Yellowstone River, northeastern Yellowstone National Park, Wyoming, USA) 5 (19510561513).jpg - Ser Amantio di Nicolao

Narrows Basalt (Lower Pleistocene, 1.5-1.6 Ma) (Narrows of the Yellowstone River, northeastern Yellowstone National Park, Wyoming, USA) 2 (20137105071).jpg - Ser Amantio di Nicolao

Lower colonnade & entablature of the Overhanging Cliff Flow (Junction Butte Basalt, Upper Pliocene, 2.01-2.15 Ma; northeastern Yellowstone National Park, Wyoming, USA) 2 (19836730692).jpg - Ser Amantio di Nicolao

Devils Tower 1997 03.jpg - LBM1948

Devils Tower 1997 04.jpg - LBM1948

Devils Tower 1997 06.jpg - LBM1948

Devils Tower 1997 05.jpg - LBM1948