What makes Red Rock Canyon so unique? Simple answer: The Keystone Thrust fault.
Here’s the slightly-more-complicated geological answer. Approximately 65 million years ago, the shifting of tectonic plates forced the oceanic plate underneath the North American Plate, creating the Keystone Thrust fault. Evidence of this type of plate-shifting activity can be seen all the way up the west coast of North America, but thanks to the Keystone Thrust fault, Red Rock Canyon is one of the most exposed examples, and it offers some of the most impressive viewpoints.