geothermal features in yellowstone national park - fumaroles and hot springs

a7iii abstract activity and background basin beauty blue brown bubbling closeup colorful concept crust danger decoration design dirt earth emerge feature features fumarole fumaroles gas gases geothermal geyser grass grasses green healthy hot landscape marsh montana mud national natural nature park pattern pine pond rocks sand sony springs steam steamy stone sulphureous surface texture thermal thumb trees volcanic warm water west wooden wyoming yellowstone