Uh, hey Moose . . . different pictures of swarming snake dens will look very similar. Just because you did a quick bit of "research" and found another similar photo of snakes in Arizona doesn't mean this isn't a legitimate Wyoming photo.
IT IS LEGITIMATE. These snakes were swarming out of their den IN WYOMING.
Hmmm - looks to me like Moose is right. Those linked photos aren't just similar, they are clearly taken in the same place. If you scroll down on the blog (planetstrong.wordpress.com/2008/05/31/amazing-pics-a-heaping>>> you first notice white rocks of identical size, shape and position in both photos, and then other rock formations that are identical, as well as the placement of vegetation. Unless the blogger is lying (which is certainly possible) this photo was taken in Arizona.
Seasonal Mass Snake Migration in Sinks Canyon. Thousands of snakes moving in packs of two to nine. Dangerous and extremely aggressive! Known to swarm. Have cut dogs to pieces and disarmed people swinging shovels at them.