The Great Rift is one of only two such features in the world. At 635 square miles, it is considered to be the largest, deepest, and most recent volcanic rift system in the continental United States. Many of Idaho`s most fascinating geological features lie along this potential wilderness. A tremendous fissure extending 65 miles opened up to emit successive lava flows some 15,000 years ago. This volcanic landscape with spatter caves, ice tubes, caves, and cinder cones awaits the adventurous desert hiker. It contains undisturbed and unusual geologic features throughout the 380,000 acres of the Craters of the Moon and Wapi lava flows. Abundant wildlife, including sage grouse, mourning doves, mule deer, and antelope, inhabit the area. Visitors can marvel at the scale-like formations of the Blue Dragon lava flow, hike the sharp and broken a`a lava of the Bear Park Kipuka, and explore lava tube caves inhabited as early as 1200 A.D.

Explore Nearby

• Craters of the Moon National Monument and Preserve Dark Sky Reserve — Dark Sky Site in Idaho
• Lake Walcott State Park — State Park in Idaho
• Massacre Rocks State Park — State Park in Idaho
• City of Rocks National Reserve — Dark Sky Site in Idaho
• Sawtooth National Forest — National Forest in Idaho, Utah