Coloradans' favorite concert venue was recently designated as a national historic landmark. Here's the story behind those remarkable, perfectly acoustic red rocks.
Red rocks colorado hi-res stock photography and images - Alamy
Untangling the Geology of Colorado National Monument
8 Attractions You Won't Want to Miss in Denver
How to Spend a Weekend in Denver, Colorado - 3 Day Weekend Itinerary (Plus 2 Bonus Days) - The Walking Mermaid
Red Rocks Amphitheatre, Denver Book Tickets Tours, 43% OFF
Denver Dinosaurs & Regional Geology
Colorado Geology - Colorado Geological Survey
Red Rocks, Colorado, Geological formation Red Rocks, near D…
Planning A Trip To Denver
Colorado by Nature: Eldorado Canyon State Park - 5280
Rocky Mountain National Park