I had the same thought. It was maybe 6" long. We saw several in the same spot. Saw a sizable garter snake as well. National park folks said it was a baby massassauga rattler which is very common in that area but thankfully not where I live. They don't get very big, aren't very venomous and they say you either need to step on one or fool with one to get bit.Beautiful pics Just Jeff, but I don't think that looks like a Rattler, but I'm no expert on what little ones look like. Just seems like the head is too narrow for a viper.