National parks in the United States

Published 6:25 PM ET, Fri December 11, 2015
Park photo 1 Big Hole National BattlefieldPark photo 1 Big Hole National Battlefield
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The Land and Water Conservation Fund uses royalties from offshore oil drilling to help states and local governments purchase and develop outdoor recreation areas. Some of the fund covers federal land projects. This is Big Hole National Battlefield in Montana. National Park Service
The Obama family hikes on Cadillac Mountain in Acadia National Park, Maine, in July 2010. Pete Souza/The White House via Getty Images
Pictured are Jackson Lake and Mount Moran in Grand Teton National Park, Wyoming. Archive Photos/Getty Images
Saratoga National Historical Park in New York commemorates an important American victory over the British during the Revolutionary War. National Park Service
Steam and poisonous gas rise and lava flows into the ocean from Kilauea volcano at Hawaii Volcanoes National Park. Marco Garcia/Getty Images
The Great Sand Dunes National Park and Preserve in Colorado. National Park Service
Buffalo walk the range of the National Elk Refuge near Grand Teton National Park in Wyoming. Michael Smith/Newsmakers
The morning sun hits the tips of the Grand Tetons in Grand Teton National Park in Wyoming. KAREN BLEIER/AFP/GettyImages
Trees on the Continental Divide Trail are pictured at Rocky Mountain National Park in Colorado. Emil Muench/Archive Photos/Getty Images
Money would go toward obtaining unprotected areas at Olympic National Park in Washington to prevent nearby private properties from discharging sewage in Lake Quinalt. Harvey Meston/Archive Photos/Getty Images