Red Rocks is a geological formation and it is the onlyarchitecteredopen-air Amphitheatre from the mother nature around the world.. Also, "the design of the Amphitheatre consists of two, three hundred-foot monoliths (Ship Rock and Creation Rock) that provide acoustic perfection for any performance. The dramatic sandstone monoliths serve as a history book of animal and plant life in the area for the past 250 million years. As spectators gaze at the towering red sandstone rocks, they view the ancient tales of prehistoric times. The area of Red Rocks, originally known as the Garden of Angels, has attracted the attention of musical performers since before the turn of the century. The majestic setting of the Amphitheatre, along with the panoramic view of Denver, makes for a breathtaking scene." From Redrocksonline.com
From Redrocksonline.com
The Sandstones rock formations
The red rocks are sandstones sedimentary type of rocks and they are formed by sedimentation of material from the surface of Earth and bodies of water. It composes with sand, silt, and clay. The process causes mineral and organic detritus to settle and accumulate from solution. Weathering and erosion formed sedimentary rocks and push to certain area by water, wind, or mass movement.
Here is video from youtube.com explaining how the Red Rocks was formed.
From youtube.com
Landforms: beautiful view of Strike Valley between Hag-backs formed from Erosion folds such as physical breakdown and Hag-backs is produced by softer rock strata