Sk 91 (Skyddsrum) is a Swedish civil defense shelter located near the coordinates 56.0795032829202, 12.6779011264443. The term 'skyddsrum' translates to 'shelter' in Swedish, indicating its purpose as a protective structure. Sweden has a long history of civil defense preparedness, particularly during the Cold War era, when the threat of nuclear conflict prompted extensive bunker construction across the country.
These shelters were designed to protect civilians from the effects of nuclear fallout and conventional attacks.