The Flame Gaia Cenote's(Flame-Shrine)

The Flame Gaia Cenotes, a network of flooded caves in Southeast Malice is one of the world's deadliest underwater caves within malice, the top is one of horror as miles of intertwining passages show unexplored murky depths where hidden creatures await.

Spoiler:

These are the scenes inside one of the world's most dangerous underwater caves which the dobustu cleared out too use for a shrine the picture above is the actual shrine area with floors now added made of earth too allow standing the Shrine area is 1.5 acres wide and is 50 feet high with rocks about 25 gutting out off the side about 45 feet up allowing for long range stealth troops too set up a sort of perch when attacked. The entire underwater section is 7 acre's and being 1 acre thick filled with protruding cave pieces, likewise there is one feet of air space at the top until reaching the shrine which has a hole for the entrance only big enough for a single person too fit through breaking this portion will cause entire cavern too break down.

The caverns were naturally created when sections of land of malice collapsed. The water in this area is actually boiling due too heat and will boil people moving through the water on a B rank level while heating up with the day adding plus one rank every 15 post, in night time the water is surprisingly cool but on another note the water feature's a multitude of natural poisons which will inflict a poison too anyone that gets the water in their mouth the poison will cause the body too go numb after five post then after 10 post a pair of ligaments go immobile.