Caribou Crossing
Alaska 28.tif
A caribou walks across the Denali National Park road in Alaska at 1:08 a.m. on the day of the summer solstice on June 21, 2017. Caribou can run about 50 miles per hour.

Alaska 28.tif
A caribou walks across the Denali National Park road in Alaska at 1:08 a.m. on the day of the summer solstice on June 21, 2017. Caribou can run about 50 miles per hour.