Yellowstone NP-I

Mammoth Hot Spring
Silex Spring
Grand Prismatic Spring
Pool near Firehole River
Dewy flora on Angel Terrace
Terraces in Mammoth Hot Spring
Clepsydra Geyser
Angel Terrace
Sunny Mammoth Hot Springs
Colours of Silex Spring
Steam on Silex Spring
Dead pine trees
People at Grand Prismatic Spring
Great Fountain Geyser
Colored tongues of Grand Prismatic Spring