Sethen’s Wall, often called the Great Wall on Kardun, is a mountain range which bisects the island of Kardun into two roughly equal sides. The mountains are tall and snow-capped, with little settlement.
Standing at nearly four kilometers tall at their highest, and fairly level from coast to coast, the Wall is constantly visible on the horizon of both sides of the island. On the rural western side of the island, the mountains have a glow at night, backlit by the city lights of Kardunash.
According to legend, the mountain range was created by Unknown with a titanic stroke of his sword.
The most notable construction on the mountains is Strixhaven, which is built roughly in the center of the range.