Gardiner River Pronghorn Bull Elk Elk Bighorn Ram Bighorn Sheep Bighorn Sheep Bighorn Sheep Madison River Bison Elk Madison River Madison Junction Madison Junction Bison Bison Bison Bison Sandhill Cranes Sandhill Cranes Sandhill Cranes Sandhill Cranes Gibbon Falls Undine Falls Yellowstone Floating Island Lake Wraith Falls Bison Bison Bison Petrified Tree Petrified Tree Yellowstone Yellowstone Yellowstone River Basalt Columns Calcite Springs Overlook Specimen Ridge and Bison Peak Calcite Springs Tower Falls Tower Falls Near Tower Falls Clear Lake Sunset Columbia Black-tailed Deer Columbia Black-tailed Deer