We next drove through the very scenic Grand Teton National Park to Flagg Ranch at the southern entrance to Yellowstone National Park. At Flagg Ranch we got in Bombardier Snowcoaches for the ride to Old Faithful. The Bombardiers are bright yellow vehicles with skis on the front and treads on the back, many of which were built as long ago as the 1950s. Traveling through Yellowstone, we stopped to see Moose Falls, the Lewis River Canyon and Lewis Falls. Lewis Falls had obvious otter tracks next to it.