Red Rocks Amphitheatre in Denver is a popular ... Rocky Mountains as they emerged about 65 million years ago. The sedimentary rock that eroded from the early Rocky Mountains was deposited in ...

Ask red-rock canyon aficionados to name their favorite ... They are about 180 million years old and known as sand or ...

A decade after the release of The Martian and a decade out from the world it envisions, a planetary scientist checks in ...

Key Highlight: Although Sedona is surrounded by towering red rock formations, you'll still want to plan a trip to the official Red Rock State Park specifically to see Cathedral Rock – one of ...