Ant Mound

The Ant Mound is located south of the Shrine of Sacrifice in the sandy heat-infested desert of the Drylands.

Description
This cave system is, as the name states, the home of the Giant Ants. The system of narrow, dark and small caves is dangerous as the sheer amount of Ants can quickly overwhelm greedy adventurers searching for loot. On the lowest levels, the Ant Queen is found. In Ultima VI, the body of the ex-pirate Ol' Hawknose is found there behind the massive Ant Queen.

Solution
For a solution to the problem in Ultima VI, see: Ant Mound Solution