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Central Idaho, USA
Craters of the Moon National Monument

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Highlights  
Cool Facts
  
Facilities  
Getting There
When to Visit
Web Sites  


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Highlights Craters of the Moon National Monument
Craters embraces an amazing array of volcanic formations � a mix of spatter cones, cinder cones, fissure vents, raft blocks, and lava tubes (caves). Lava flows include pahoehoe, and aa (names that originated in volcano studies on Hawaii), and lava "bombs" come in such evocatively-named forms as cow dung and breadcrust. Craters is your one-stop shop for basaltic volcanism!  A strange landscape, the area is considered so lunar-like American astronauts have actually been trained at this site. (Did anyone think to ask how the places compared, I wonder?)

Cool Facts 

  • The Monument sits on a lava field that is the largest in the United States at 618 square miles (1,600 square kilometers).
  • You can figure out where the Great Rift lies, by the chain of cinder cones.
  • The highest cinder cone is Big Cinder Butte which stands more than 700 feet above the surrounding plain.
  • Craters is home to 300 species of plants, 2,000 insect species, 148 birds, 47 mammals, 8 reptiles, and a lone amphibian, the western toad.
  • Plants and animals have adapted in unique ways to deal with this environment. A sagebrush sitting unprepossessingly on a lump of lava, might have a tap root going 20 feet down to get at water. Marmots hibernate both summer and winter.
  • In places, molten lava flows encased standing trees and then hardened, and eventually the wood rotted, resulting in vertical tree molds.

Facilities 

  • Visitor Information Center. Displays, video, conducted walks, evening programs, and publications for sale, water and comfort station.  Phone: 208-527-3257
  • Paved roads for vehicles include a 7-mile loop road. Walking trails include disabled access.
  • Campground is available.
  • The southern part of the Monument is a wilderness area closed to vehicles.

Getting There 

The Monument lies on U.S. Alternate Route 93.  You'll find it 29 kilometers southwest of Arco in Butte and Blaine counties.  Closest interstate is I-84 to the south.

When to Visit 

  • Early May until late August (especially late June) when wildflowers transform the harsh landscape.
  • Winter to ski on the groomed Loop Drive and see a strange landscape of black and white.
  • Note: Extremes of weather are part �n parcel of the Monument. The intense summer sun bakes the black lava, generating air temperatures in the 90's (Fahrenheit). Winds are daily occurrence, especially in the afternoon, and may reach 15 to 30 miles per hour.

And remember rock collecting is not permitted!

Web Sites 

Craters of the Moon
National Park Service page on the monument has basic information on how to make the best of a visit to the monument, plus a link to their expanded web pages.

Craters of the Moon, Idaho
It is worth waiting for the Aerial images of the monument to open.  (On the Volcano World web site.)

Craters of the Moon, Idaho
Includes geographic setting, and geologic and eruptive history.  (On the USGS Cascades Volcano Observatory web site.)

Yahoo Parks: Craters of the Moon
The Yahoo page for the monument.  Mainly information sourced from the National Parks Service on facilities, hours, fees and the like.


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Central Idaho
Click map to locate Craters of the Moon in Central Idaho.


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Moon Handbooks: Idaho 5th Edition
by Don Root
May 2004, Paperback, 4th edition, Paperback, 568 pages.
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Idaho Atlas & Gazetteer by DeLorme Publishing. ISBN: 0899332846; 
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Idaho's Scenic Highways: A Mile-By-Mile Road Guide
by Kathleen E. Rivers, John Plummer
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Idaho is packed with lost-highway drives to ghost towns, secret canyons, and secluded hot springs.
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by Margaret Fuller
June 1998, 3rd edition, Paperback, 236 pages, (guidebook)
A few miles north of Sun Valley, Idaho, the Sawtooth National Recreation Area offers hundreds of miles of hiking and riding among the majestic scenery of four mountain ranges. This guide provides detailed descriptions of 103 hikes with notes on 49 other trails.
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