Smithsonian magazine's 22nd Annual Photo Contest | Made possible through the support of MPB.com

11th Annual Smithsonian Magazine Photo Contest Travel
Staircase in Mammoth Cave National Park

Staircase in Mammoth Cave National Park

Photo Detail
Date Taken: 05.2011
Date Uploaded: 11.2013
Photo Location:
Camera: NIKON D300
Copyright: © Henry Huey