D&D 3.0: Tales from Mystara
Labyrinth of Ekelon
The Labyrinth of King Ekelon
Kingdom of Karameikos
King Ekelon was a traladaran king of great renown for his cruelty and greed. He ordered the construction of a gigantic five level dungeon to store his vast amounts of gold.
The group of adventurers The King Companions was able to clean up the first level of the labyrinth and escape from the nearby ruler. They used the gold to built their own domain on the Kingdom of Nathania.