Dark Green Cathedral is a dungeon that is required to go to in order to obtain 《Wedding Rings》.
It is a dungeon located deep within the Man-Eating Woods. The Dungeon is home to level 99 monsters such as the 《Blessing Bears》. In the deepest depths of the dungeon, there is an enchanted metal mass known as 《Eternal Mythril》. This metal can be collected multiple times by repeatedly going in and out of the dungeon, but it can only be collected when a male-female pair enter the dungeon.
- Because the average level of the adventurers in Faltra is level 20, this dungeon is not frequented since level 99 《Blessing Bear》 monsters roam the dungeon.