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Near Mammoth Lakes in Mono County, California — The American West (Pacific Coastal)
 

Preserving Special Places

Devils Postpile National Monument

 
 
Preserving Special Places Marker image. Click for full size.
Photographed by Don Morfe, July 10, 2009
1. Preserving Special Places Marker
Inscription. Devils Postpile stands not only as an unusual geologic wonder but as a monument to the visionary efforts of a dedicated conservationist. In 1910, under U.S. Forest Service management, engineer Walter L. Huber received an application from mining interests to blast the formation and dam the river. Huber sparked a campaign that succeeded in blocking the application and led to the designation of Devils Postpile National Monument in 1911. Since then, other citizens have worked with the National Park Service in its ongoing effort to protect the special scientific and recreational values of this area.

It is a remarkable example of basaltic columns, the finest, I believe, in America....
Professor Joseph LeConte, 1909.

photo captions:
The efforts of Walter L. Huber (above), University of California Professor Joseph LeConte, and Sierra Club President William Colby led to the designation of the national monument.

In 1925, Superintendent W. B. Lewis of Yosemite visited Devils Postpile with the hopes of returning the area to the park. 1n 1933, management was returned to the National Park Service.

James M. Hutchings took this photo of Devils Postpile in 1875 when he led an expedition from Yosemite Valley to Mount Whitney. Appreciation of this geological wonder led to its
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inclusion in Yosemite National Park in 1890.
 
Erected by National Park Service.
 
Topics. This historical marker is listed in these topic lists: Natural FeaturesParks & Recreational Areas. A significant historical year for this entry is 1910.
 
Location. 37° 37.464′ N, 119° 5.064′ W. Marker is near Mammoth Lakes, California, in Mono County. It can be reached from Minaret Road (California Route 203) 13 miles west of Mammoth Lakes. Touch for map. Marker is in this post office area: Mammoth Lakes CA 93546, United States of America. Touch for directions.

Regionally, this marker is in California’s Sierra Nevada. It is also in the American Mountain West. Globally, it is in North America, on the Ring of Fire, in the Pacific Rim, in the Western Hemisphere, in the Western World, and in the Anglosphere. Historically, it finds itself in what was once New Spain and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within 7 miles of this marker, measured as the crow flies: Devils Postpile National Monument Ranger Station (approx. 0.4 miles away); Dave McCoy (approx. 3.2 miles away); Mammoth City (approx. 4.7 miles away); The White Fence at Old Mammoth (approx. 5.1 miles away); The Mammoth Consolidated Gold Mine (approx. 5.7 miles away); Historic Knight Wheel (approx. 6.1 miles away); Old French Trail (approx. 6½ miles away); The Tavern (approx. 6.7 miles away). Touch for a list and map of all markers in Mammoth Lakes.
 
Devils Postpile image. Click for full size.
Photographed by Don Morfe, July 10, 2009
2. Devils Postpile
Devils Postpile image. Click for full size.
Photographed by Don Morfe, July 10, 2009
3. Devils Postpile
Ranger Station image. Click for full size.
Photographed by Don Morfe, July 10, 2009
4. Ranger Station
 
 
Credits. This page was last revised on December 10, 2025. It was originally submitted on March 3, 2013, by Don Morfe of Baltimore, Maryland. This page has been viewed 693 times since then and 28 times this year. Photos:   1, 2, 3, 4. submitted on March 3, 2013, by Don Morfe of Baltimore, Maryland. • Syd Whittle was the editor who published this page.
 
Editor’s want-list for this marker. Wide view photo of the marker and its surroundings showing its location. • Can you help?
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Jun. 23, 2026