Hike backpack or ride horsebacktheres a trail for you. Yellowstone and Grand Teton National Parks offer the ultimate in natural and geothermal wonders backcountry lakes panoramic summits glaciercarved canyons steaming geyser basins and vast meadows teeming with wildlife. Top Trails Yellowstone and Grand Teton National Parks by experienced outdoors authors Andrew Dean Nystrom and Bradley Mayhew contains 46 mustdo trips from Mammoth Hot Springs to Old Faithful from the Absarokas to the Gallati