SUNSET CRATER VOLCANO NATIONAL MONUMENT, ARIZONA
Bypass the Grand Canyon this year, and head to Sunset Crater. Set in a landscape full of dozens of symmetrical cones, Sunset Crater is a classic example of a cinder cone, named for the reddish oxidized material at its top. Many volcanic features can be seen along trails, including lava “squeeze-ups,” spatter cones, and lava bubbles. While you cannot climb Sunset Crater’s volcano, you can climb the nearby Lenox Crater.