From a tectonic event to a sacred site, here's how Red Rocks

As an open-air theater built into a rock formation, Red Rocks Amphitheatre combines "awe-inspiring natural scenery with natural acoustic splendor" to create a one-of-a-kind venue. Here

How Colorado's Red Rocks Amphitheatre came to be - The Columbian

Geology of the American Southwest: Grand Canyon, Bryce, Zion

Hovander/Tennant Trail: Ferndale parks offer hiking, history

Displaced travertine cliffs below Romanesque Palace (after Malgot in

Outdoors News, Videos, Pictures & Scores

Sedona Energy Vortexes, Explained: How to Experience Them - Thrillist

Escape the snow for San Luis Obispo Co. hikes

Outdoors News Hilton Head Island Packet

Mount Vesuvius & Pompeii: Facts & History