I drove through the north loop of Yellowstone National Park on my way between Montana and Wyoming. I almost left without pictures. You'd really have to be there to smell the sulpher and get hit  in the face with spray to fully appreciate the otherworldly nature of mud pits and geysers.

It was crowded with people and the weather was rainy and gray through most of the park. But on my way out, heading toward the east entrance, I was blessed to see this: