Fog often forms above the river, especially in the early morning, like here, when the outside temperature is cold. The river is warm due to the geysers and thermal pools that drain into it. Yellowstone's Madison River, September, 2007.
Fog often forms above the river, especially in the early morning, like here, when the outside temperature is cold. The river is warm due to the geysers and thermal pools that drain into it. Yellowstone's Madison River, September, 2007.
