Amboy Crater

Amboy Crater, off National Trails Hwy, 2 miles west of Amboy, is a 250ft-high, almost perfectly symmetrical volcanic cinder cone. You can hike to the top for great views over the lava fields where NASA engineers field-tested the Mars Rover. The 3-mile round-trip hike doesn’t have a stitch of shade, so avoid heading out midday or in summer.