Last summer, I stopped in Yellowstone National Park for a couple of days while on my way to Pacific Coast from Chicago. Much of my photography took place just after sunrise. I enjoyed capturing images of foggy landscapes. Foggy conditions were common in areas where the hot springs met the cool morning air.

The Mud Geyser area is particularly foggy and is located just south of Hayden Valley. Boardwalks make it easy to navigate around the geysers. Early one morning, I captured the following image of the fog (more likely it's steam) from one of the boardwalks:

A few minutes later, I was startled to see a massive bison standing too short of a distance behind me. I think he was attracted to the warm temperature of the Mud Geyser area. It was scary to be standing there alone with nothing between me and a large wild animal. Fortunately, the bison was content to continue grazing and paid little attention to me. I slowly backed my way out of the area.

In Yellowstone National Park, you must always watch your back. I recently viewed photographs of grizzly bears walking along the boardwalks just a few hundred yards away from the Old Faithful Inn!