Vitriol Cesspool is an area in Xenoblade Chronicles X. It is a cave located in Noctilum. This area is accessible from FN Site 209 by following the canyon to the northwest. The Vitriol Cesspool's main feature is a lake of poisonous water that saps 75 HP per second; this can be reduced by Terrain Damage Reducer Augments. Past the poisonous water lies an open area with various treasures guarded by hidden Ghillie Falsaxums. Jejebba and Arsenican can be found here during The Mad Monk and The Voltant Visionary respectively. The Squad Mission Contamination Nation also takes place here.