Most of western Colorado lies within the Colorado Plateau. This high-desert formed millions of years ago when tectonic plates slowly pushed together, uplifting stacked layers of sand, silt and mud ...

Rocks gathered along the Colorado River contained evidence of a bustling community of animals in an ancient sea.

Long after tectonic plate movement has created mountains, forces such as weather and river erosion can continue to shape a landscape. One such landscape is the Colorado Plateau, which spans more ...