The Buffalo National River, seen from the Arkansas bluffs above it. Photo Aaron Bates. Tweeted by the US Department of the Interior, 10/5/16.
A stream in Gates of the Arctic National Park. Tweeted by the US Department of the Interior, 10/17/16.
A dusting of snow surrounds Dream Lake in the Rocky Mountain National Park. Tweeted by the US Department of the Interior, 10/6/16.