late spring in yellowstone: little cub, lioness, big cub and lion geysers of the lion group on geyser hill in upper geyser basin

background basin big blue caldera clouds cone cub day environment feature forest geology geothermal geyser geysers green group hill horizon hot hydrothermal landscape late lion lioness little national natural nature nps outdoor panorama park scenery scenic sky spring steam thermal tourism travel trees upper vapor view volcano water wyoming yellowstone