#Yellowstone #NationalPark's Lamar Valley might be known for its #wildlife viewing, but it is also a great place to watch the sun set. @Yellowstonenps's Neal Herbert capture this photo of #LamarValley during #sunset one day last month. National Park Service photo.
Amazing Images: The Best Science Photos of the Week
Snow and low clouds blanket the mountains and trees in this wintry scene of Rocky Mountain National Park in Colorado. The park contains 150 lakes, 359 miles (578 kilometers) of trails and 72 peaks higher than 12,000 feet (3,700 meters).Rocky Mountain National Park is home to a variety of large mammals, including elk, bighorn sheep, black bears, moose and mountain lions. [Related: Top 10 Most Visited National Parks]