Devils Postpile National Monument.
Piles of fractured columnar basalt at the foot of Devils Postpile.
A visitor surveys the ends of the basalt columns at Devils Postpile.
Devils Postpile National Monument.
The tops of Devils Postpile's hexagonal columns were planed by a passing glacier.
Devils Postpile National Monument.
Devils Postpile National Monument.
A ramp leads to Devil's Postpile, circumventing a series of stone stairs.
Looking west from the top of Devils Postpile.
Hexagonal basalt columns formed from a slowly cooling lava flow.
Basalt columns of Devils Postpile National Monument.
Devils Postpile National Monument.
A timeline of Reds Meadow Valley.