According to the legend, a daughter of a poor fisherman was born in the Curonian village. People called her Neringa. The girl was extraordinary because she grew tall and was a giant. The sea dragon heard of her beauty and decided to marry her. When Neringa refused to marry, the dragon began to sink ships.
Neringa thought that the dragon would be covered by a sand dyke, carrying sand, dunes, pine forests, pebbles, and stones. So Neringa separated the lagoon from the sea. Naglis, loved by Neringa, started to defend the girl - he killed the head of the dragon, cut his body, and poured sand. This is how Naglis Hill emerged, on which Neringa and Naglis wedded.