I was in Denver for a very short time and could never have seen what I did without this tour. This trip was perfect, low numbers in the group (9), small mini-bus, Will (our guide) did a terrific job, incredibly well informed about the environment/mountain eco-system, chatting and good-humoured, with a great eye for spotting elk and birds of prey. We visited the Park on a misty day, but - like magic - at 12000 feet, we rose up and out of the mist to see the spires of the Rockies, it was really magical. Also, the autumn fall colours were wonderful, like a painting. Strongly recommend this tour.