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DEVILS TOWER NATIONAL MONUMENT - WYOMING IS A BUTTE, POSSIBLY LACCOLITHS, COMPOSED OF IGNEOUS ROCK. IT WAS ESTABLISHED AS NATIONAL MONUMENT IN 1906 BY THEODORE ROOSEVELT. RESISTANT TO EROSION, IT FORMS VERTICAL CLIFFS THAT ENCIRCLE THE TOWER.
JAN HALASKA
440601631
DEVILS TOWER NATIONAL MONUMENT - WYOMING IS A BUTTE, POSSIBLY LACCOLITHS, COMPOSED OF IGNEOUS ROCK. IT WAS ESTABLISHED AS NATIONAL MONUMENT IN 1906 BY THEODORE ROOSEVELT. RESISTANT TO EROSION, IT FORMS VERTICAL CLIFFS THAT ENCIRCLE THE TOWER.
JAN HALASKA
440592903