Geology of the Grand Canyon (part 1) with climber Dr. Karl Karlstrom

Recorded on location at the bottom of The Grand Canyon with Dr.
Karl Karlstrom, professor of Geology in the department of earth
& planetary sciences at The Univeristy of New Mexico. Karl is a
professional climber who has been working in the Grand Canyon for
over three decades. Karl was directly involved with the creation of
the Grand Canyon South Rim's "Trail of Time".

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