Four drown in a year at former gravel pits near Roskilde

Four people have drowned in the past year in two popular swimming lakes near Roskilde, including Himmelsøen, a frequent destination for Roskilde Festival attendees seeking relief from the heat, Danish broadcaster DR reports.

The lakes are former gravel pits, which present hidden dangers beneath their inviting turquoise waters, according to Allan Nyholm, director of SvømDanmark.