This was our third trip to the park. We spent 2 weeks in West Yellowstone touring the lower part of the park and then 7 days at Mammoth campgrounds touring the upper part of the park. We were able to spend lots of time watching animals this year. We really enjoyed the Grizzly and Wolf discovery center in West Yellowstone, a place I believe that everyone should go to when in the area. Took lots of photos so be sure to click on the blue links. Enjoy the tour.