Roger Putnam
Roger Putnam is a Professor of Geology at Merced College and is an active research geologist in Yosemite Valley. He has many publications on the geology of the Valley, the most famous of which is the geologic map of El Capitan. This map was awarded the Best Geoscience Research Resource Work Award of 2015 by the Geoscience Information Society.
He is also a top big wall climber in Yosemite, with 41 ascents of El Capitan, the fastest of which took him just under 6 hours.
