Yellowstone NP

Heart Pool
Doublet Pool at Sunset
Sunset Pool
Grand Prismatic Spring
Whirligig Geyser
Emerald Eye
Sawmill Geysir With Rainbow
Chinaman Spring
Opalescent Pool
chromatic-spring
Crested Pool
Midway Geyser Basin
Riverside Geyser
Fishing Cone
Twin Pools
Punch Bowl Spring
Square Pool
grotto-geyser
Opal Pool
Lemon Spring
Rusty Geyser
emerald-pool-spring
Lions Geyser Group
Great Fountain Geyser
Turquoise Pool
Grand Prismatic Spring at Midway Geyser Basin
Heart Spring im Yellowstone Nationalpark, USA
Silent Pool
Echinus Geyser
Abyss Pool
Firehole Spring
Punch Bowl Spring
Cliff Geyser
south-scalloped-spring
black-opal-pool
artesimia-geyser-sunset
Ojo Caliente
Yellow Emerald Pool
Saw Mill Geyser
Daisy Geyser
Castle Geyser eruption at sunset
Artemisia Geyser
White Dome Geyser
Castle Geyser at Twilight
Geyser Detail
Sawmill Geyser
whirligig-geyser-norris
Beehive Geyser
White Dome Eruption
Artemisia Geyser Pool
Riverside Geyser Rainbow
Sapphire Pool
Lone Star Geyser
Clepsydra Geyser
cliff-geyser-and-spouter
grotto-geyser-group
Beehive Geyser Eruption
Jewel Geyser
Deep Turquoise Pool
Porcelain Basin
Sprite Pool
Chromatic Pool
Geyser Basin
Emerald Pool Detail
Opalescent Pool
Grand Prismatic
Iron Spring
geysers-and-spring
Excelsior Geyser
grand-prismatic-yellowstone
Morning Glory Pool
West Geyser
grand-prismatic-detail
mammoth-hot-springs
beehive-and-old-faithful
Old Faithful Geyser
Beauty Pool
Pool Detail
Castle Geyser erupting at twilight
White Dome Geyser Eruption
Black Sand Pool
Midway Geyser Basin Patterns
Emerald Pool