spring in yellowstone: blue mud steam vent, muddy sneaker complex & hydrophane springs in back basin area of norris geyser basin

area back background bas basin blue caldera clouds complex day environment feature forest fumarole geothermal geyser green horizon hot hydrophane hydrothermal landscape late mud muddy national natural nature norris outdoor panorama park pool pot scenery scenic sky sneaker spring springs steam thermal tourism travel trees vapor vent view volcano wyoming yellowstone