Hammeren hi-res stock photography and images - Alamy
File:Hammeren - Udsigt mod Opalsøen og Hammersøen - A former granite quarry - panoramio.jpg - Wikimedia Commons
Hammersø (Hammer Lake), or Hammer Sø, is the largest lake on the island of Bornholm and the only tarn in Denmark. It is located in a valley in Hammeren, the nor…