We did two tours with Yellowstone Vacations with Tim Daley. They were both excellent. Old Tim, as he likes to be called, was even better the second day, never expecting to see us again, we laughed when he arrived to pick us up on day two. Being a true "born in Montana" guide Tim was able to share so much and you could feel his true devotion to the park. We would return, especially during the winter, and take another tour with Tim without hesitation. We did both loops and saw such diverse terrain, we were never bored. Tim could answer any questions we threw at him, Great experience.