The red, nectar-filled blooms of this cactus are favored by hummingbirds. 

Started as two separate river systems that began carving the canyon 17 million years ago. By 6 million years ago, they joined as a single stream.

Cougars use ledges just below the canyon rim for daytime rest, but rarely traverse the mile-deep canyon. 

From an old kill; cougars sometimes drag prey to secluded places to eat alone. 

A mile-wide mesa.