aspens

Third in a series of natural history publications presented by the Grand Canyon Natural History Association, this little book introduces several tree species to Canyon visitors and readers alike. The book talks about the park's “deer epidemic” which happened when ranchers got permission allowed kill mountain lions. This caused the deer population to dramatically increase and destroy the aspen trees on the Kaibab plateau. In response, officials introduced the practice of deer hunting and allowed some existence of mountain, hoping to curtail the problem.