Craters of the Moon National Monument and Preserve in south central Idaho. This extensive lava field formed thousands of years ago during eight major eruptive periods along the Great Rift volcanic zone. Lava here covers approximately 618 sq mi (1,600 sq km). The Earth's crust is being pulled apart in this region due to basin and range type faulting. On average, there have been lava eruptions in this area every 2,000 years or so -- the last eruption occurred about 2,200 years ago.
Craters of the Moon National Monument and Preserve, Idaho: "Roughly the size of Rhode Island, the miles of black lava and the remote location gives Craters a wonderful night sky that attracts amateur astronomers to view the heavens."
Craters of the Moon. What a name. We didn’t know much of anything about this desolate landscape when we started researching, but Grandma recommended it, so we figured it would be our first stop on the way to Yellowstone. We had a long day ahead of us just to arrive at Craters of the Moon. We left early in the morning and drove for what felt like forever.