Craters of the Moon National Monument, Idaho

Who needs NASA when you can come to the Craters of the Moon monument about 90 miles north of Twin Falls, Idaho?

This eerie lunar landscape is the product of volcanic lava flows that stopped only about 2,000 years ago. (Geologists say they could start up again, although no one seems too worried.)

You can see it all on a 7-mile loop drive or if you want to feel boot on lava, hike the North Crater Flow trail. More