Marble Canon, one of the gorges of the Colorado, here, 1,200 feet deep. The steep cliff is gray limestone...below red… https://www.rawpixel.com/image/14288875/photo-image-person-marble-waterFree Image from public domain licenseJUN 29 Nevada Engines in Yard. LAS VEGAS, NV - JUNE 29: BLM wildland firefighter Ashley Farrell calls in a spot weather… https://www.rawpixel.com/image/8742276/photo-image-public-domain-person-redFree Image from public domain licenseWest Clear Creek Trail #17 provides the only marked and maintained access to the lower reaches of West Clear Creek… https://www.rawpixel.com/image/3394263/free-photo-image-acanthaceae-amaryllidaceae-animalFree Image from public domain license