15¢ This leaflet has been produced to increase your enjoyment of Yellowstone National Park by the Yellowstone Library and Museum Association in cooperation with the National Park Service. U. S. Department of the Interior 4/78 There are miles of trails in the Canyon area. Many are well traveled, short and paved; others are maintained and marked, but not paved. The elevation of the Canyon rim is about 8000 feet, which makes even the short walks surprisingly strenuous for many people. Take your tim