The uncertain location of the Battle of Svolder, where Olaf Tryggvason died or disappeared in 1000.
Svolder was the site of a major naval battle around 1000 where Olaf Tryggvason of Norway was defeated and killed by a coalition of Danish, Swedish, and Norwegian forces loyal to Sweyn Forkbeard of Denmark. The exact location remains disputed among scholars.
Olaf Tryggvason's death at Svolder — leaping into the sea from his flagship Long Serpent rather than surrendering — became one of the most celebrated episodes in Norse tradition, depicted in several sagas and skaldic poems. His defeat ended Norwegian independence for over a decade, with Denmark and Sweden dividing control of Norway.