BOISE, Idaho — Officials say an earthquake in March is threatening caves at the Craters of the Moon National Monument in Idaho.
Two National Forest Service cave experts found two structural concerns in the national preserve after a magnitude 6.5 earthquake near Boise rumbled on March 31.
Wade Vagias, superintendent of the Craters of the Moon, says there is one fracture that has the potential to collapse.
Eric Bilderback, a National Park Service geomorphologist, says the agency must balance intervention with letting nature run its course.
Boise State Public Radio reports Bilderback's office will plan additional evaluations throughout the fall to determine how to proceed.
