Ales stenar (Stones) is Sweden's largest preserved "ship setting" - stones set in the layout of a ship. We do not know for certain what function the stones have had through the ages, or what the ship setting symbolised for the people who created it.
Source : Swedish National Heritage Board
The 59 stones, located near Kåseberga on Sweden's southern coast, are between 1400 and 5500 years old, and weigh up to 4 tonnes. They appear to be laid out in the outline of a ship.
Reasons for its construction are disputed. Theories include uses as :
More info:.National Swedish Property Board (in Swedish)