Beaver Pass Shelter - Credit: Wikimedia Commons
The Beaver Pass Shelter is in North Cascades National Park, in the U.S. state of Washington. Constructed by the United States Forest Service in 1938, the shelter was inherited by the National Park Service when North Cascades National Park was dedicated in 1968. Beaver Pass Shelter was placed on the National Register of Historic Places in 1989. Read more on Wikipedia
Source: en.wikipedia.org