Yellowstone National Park

Palette Spring, Mammoth, Yellowstone National Park, Dan Hudson photo 

Mammoth hot springs, Yellowstone National Park, Dan Hudson photo

Mammoth hot springs, Yellowstone National Park, Dan Hudson photo 

Canary Spring, Mammoth, Yellowstone National Park, Dan Hudson photo 

Bison, Yellowstone National Park, Dan Hudson photo 

Lower Geyser Basin, Yellowstone National Park, Dan Hudson photo 

Clepsydra Geyser, Lower Geyser Basin, Yellowstone National Park, Dan Hudson photo 

Old Faithful, Upper Geyser Basin, Yellowstone National Park, Dan Hudson photo

Riverside Geyser, Upper Geyser Basin, Yellowstone National Park, Dan Hudson photo

Bull Elk, Yellowstone National Park, Dan Hudson photo 

Morning Glory Pool, Upper Geyser Basin, Yellowstone National Park, Dan Hudson photo

Chromatic Pool, Upper Geyser Basin, Yellowstone National Park, Dan Hudson photo

Traffic Jam, Yellowstone National Park, Dan Hudson photo

Fall Colours, Yellowstone National Park, Dan Hudson photo 

New Blue Spring, Mammoth, Yellowstone National Park, Dan Hudson photo