The lake is named after Sythuthan, a Namornese trickster god due to the trickster nature of the Syth; it can go from sunny and breeze to cold and windy in a heartbeat, and is extremely treacherous because of this. The waters are also freezing because the currents come from the glaciers in the north.
The island city Kugisko is primarily on the Syth. The Imperial Palace of Dancruan also opens onto the lake. The Julih Tunnel is a secret passageway in which people can escape the palace by boat. It was used several times by Berenene dor Ocmore during assassination attempts, and was used in 1043 KF by Finlach fer Hurich to hide Sandrilene fa Toren during his kidnap attempt.