This comic is collected in the trade Batman: Dark Legends. It does also have an interesting little Mike Mignola and Dan Raspler story called Sanctum (Legends of the Dark Knight 54) which has Mignola's usual Lovecraftian interests crossed with Batman. Not bad.

I personally do not recommend the trade as it also has two so-so stories Mask (Legends of the Dark Knight 39, 40) and Tao (Legends of the Dark Knight 52, 53).