spring in yellowstone: looking up at the barren slope of dr. allen`s paint pots in the back basin area of norris geyser basin

allen allens area back background barren basin caldera clouds day environment evergreen feature forest fumarole geology geothermal geyser green hill hillside horizon hot hydrothermal landscape late looking national natural nature norris nps outdoor paint panorama park plume pots scenery scenic sky slope spring steam thermal tourism travel trees vapor vent view volcano wyoming yellowstone