Citadel of Heights and Depths (CoHaD) is an Intense difficulty, mixed-progression based Citadel located in Ring 3. It was made by Jukecallaa, ciel_azulsky, Gammattor, punkynil, and uuuuuuuurchinn.

Pits are one of the main gimmicks of CoHaD. Each pit leads to a dark room, but the player can escape and not die when falling into a pit. This citadel is also notorious for being the longest tower of any tower type in the game, taking around 3 hours.