Runoff from the Excelsior Geyser Basin into the Firehole River

Excelsior Geyser Crater

Grand Prismatic Spring

Grand Prismatic Spring

Grand Prismatic Spring

Opal Pool

Turquoise Pool

Firehole Spring

Surprise Pool

Great Fountain Geyser

White Dome Geyser

Black Warrior Lake

Roaring Mountain

Bighorn Sheep

Petrified Tree