While standing at Surprise Springs on the Firehole Lake Drive in Yellowstone National Park, we had another surprise. White Dome Geyser took that moment to erupt. It apparently erupts on an irregular schedule with an average interval of 20-30 minutes, but it has been known to be as short as 8 minutes and as long as 3 hours. It is among the tallest dome geysers in the park, though its plume only reaches about 30 feet. This shot is from between a quarter and a half mile away. Sony a6700 with the Tamron 50-400 Di iii zoom at 273mm equivalent. Program mode. Processed in Photomator.