What kind of snakes do y'all have here?

One of the most popular questions I get on a safari is what kind of snakes are in the area.  Though there are four different kinds possible we tend to only see one species, the Wandering Garter Snake.  Great views were had of this snake lurking in the cracks of a few boulders near one of Grand Teton NP's many lakes.  We watched the snake for about ten minutes and it barely moved, their patience is incredible.  Both me and one of our guests had telephoto lenses and were able to capture some decent images of the patient hunter waiting for its next meal.