Derrick was an awesome tour guide! He knew all the secret spots and avoided all the crazy traffic and lines. We saw bison, elk, big horn sheep, and a mama bear and cubs! We saw the best of Yellowstone, geysers, thermal pools, water falls, canyons. He even picked us up from Bozeman at 6am. He was very knowledgeable from both his experience and educational background. We really enjoyed his company and would recommend to anyone who is looking for a high end, private experience that’s not your typical Yellowstone tourist trip.