Devils Postpile National Monument
Submitted by siteadmin on Sun, 02/01/2009 - 20:50
Devils Postpile National Monument
P.O. Box 3999
Mammoth Lakes, CA 93546
Phone: 760-934-2289
Hot lava cooled and cracked some 100,000 years ago to form basalt columns 40 to 60 feet high resembling a giant pipe organ. The John Muir Trail and Pacific Crest National Scenic Trail traverse the monument.