Known as 'the place no one knew,' Glen Canyon is a natural canyon in the Vermilion Cliffs area of southeastern and south-central Utah and north-central Arizona in the United States.

pt. 1. Discovery of Glen Canyon -- pt. 2. The Mighty Colorado: Power of Water -- pt. 3. Lake Powell: Environmental Controversy? -- pt. 4. Locked in Stone: Mesas, Buttes and Pinnacles -- pt. 5. Geology of Glen Canyon, Colorado -- pt. 6. The Fossils of Tropic Shale -- pt. 7. Geology of the Vermillion Cliffs Wilderness Area and the Coyote Buttes.