Geysers, Yellowstone national park, Wyoming, USA

america idaho montana north usa wyoming yellowstone conifer conifers countryside exterior famous geologic geological geologically geology geothermal geothermic geyser geysers hot known landscape landscapes layer layered layers national nature outdoor outdoors outside park photo pool reserve scenery scenic sediments seeing sight source sources spring steam steaming stretches structure thermal tier tiered tiers vapor vapour warm water well known wells worth