Perry Creek Shelter - Credit: Wikimedia Commons
The Perry Creek Shelter is in North Cascades National Park, in the U.S. state of Washington. Constructed by United States Forest Service employee Fred Berry in 1937, the shelter was inherited by the National Park Service when North Cascades National Park was dedicated in 1968. The shelter was placed on the National Register of Historic Places in 1989. Read more on Wikipedia
Source: en.wikipedia.org