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On Highway 89 south I was flanked by the Rocky Mountains for a couple hundred miles. This is the Sawtooth Range/Bob Marshall Wilderness.
Top photo: Old Man of the Hills and Walling Reef.
LL: Fraser, Old Man and Walling
LR: Fraser and Old Man
from summitpost.org: Most the the peaks and ridges in the area are formed from ancient bedrock that sometimes runs for miles and miles. Many of the boulders and even some massifs are actually composed of limestone, which is formed when ancient ocean-dwelling creatures died and their shells floated to the bottom, forming a soft type of rock that frequently has some of these fossils still within them. One of the best spots for finding ancient ocean-dwelling fossils is atop Headquarters Pass or just Southwest of there, Rocky Mountain. The area is full of scree rock that is embeded with many sea shells and ancient coral-like fossils.
Top photo: Old Man of the Hills and Walling Reef.
LL: Fraser, Old Man and Walling
LR: Fraser and Old Man
from summitpost.org: Most the the peaks and ridges in the area are formed from ancient bedrock that sometimes runs for miles and miles. Many of the boulders and even some massifs are actually composed of limestone, which is formed when ancient ocean-dwelling creatures died and their shells floated to the bottom, forming a soft type of rock that frequently has some of these fossils still within them. One of the best spots for finding ancient ocean-dwelling fossils is atop Headquarters Pass or just Southwest of there, Rocky Mountain. The area is full of scree rock that is embeded with many sea shells and ancient coral-like fossils.