"Scroll Down through History" displays the layers of rock exposed within the Grand Canyon and shows when in earth's history they formed. The region where the Grand Canyon now lies begins to shift ...

LIZ BONNIN: So those layers of rock are really a bit like the rings on a section of a tree trunk. Both giving a visible indication of how old they are. Liz Bonnin introduces the Grand Canyon with ...

It is interesting to contemplate the force of water as over the eons the Colorado River meticulously sliced through layers of Arizona bedrock. The erosion of rock is a slow process, but Nature is ...

Layered rock formations The Grand Canyon is a geological marvel, with layers of sedimentary rock that span nearly two billion years. The vibrant colors – from deep reds to golden yellows ...

Explore incredible discoveries in Grand Canyon National Park, from fossils to burial sites, and discover what hides beneath ...