Life returns after a 2002 forest fire on the mesa in Mesa Verde National Park.
BNSF and Norfolk Southern locomotives lead a double stack intermodal train east in front of the Amtrak station and visitor's center in Flagstaff, Arizona.
A panorama of 5 images shows the incredible breadth and depth of the giant meteor crater just off I-40 in Arizona. The crater is dated to 50,000 years ago.
