Blue Dragon Caves is the name commonly given to a five level dungeon found deep in the Caverns of Chaos. It is entered from a staircase found on the fourth level of the Unreal Caves (the one that Sharad-Waador is found standing beside); making it a side-branch of a side-branch of the caverns. It is referred to as "some ancient dragon caves" in the death log, and uses the shorthand "DL" ingame.