Fossils are echoes of an ancient past. Find out about the two major categories of fossils, how fossilization occurs, and how fossils can help paint a picture of the planet's history.
Traveling for 64-miles along the border between Chama, New Mexico and Antonito, Colorado, the Cumbres & Toltec Scenic Railroad chugs its way up and over the 10,015 foot high Cumbres Pass.
