Scope and Contents "A Canyon Voyage: the Eggert-Hatch Expedition, 1955-56. Video transfer from 16mm format version." Also includes "Danger River." These two films were made during the 1955-56 Eggert-Hatch expedition, the last river trip to follow the course of the Green and Colorado all the way from Wyoming to Lake Mead before Flaming Gorge and Glen Canyon Dams were begun in 1956. Film shows river from Green River, Wyoming, to Lake Mead, Arizona. 1:39:15.