The final dungeon of the game´s storyline, this is where the dark ritual to bring forth the Dark Gods is being performed.
The first floor consists of a prison where the party can meet a friendly elf named Layer, who may join as a sixth party member. But only in the dungeon.
The lower floors contain all sorts of traps and obstacles: dark zones, anti-magic zones, warps,non-teleporting zones, pits and chutes. The final floors have a wide plethora of dangerous monsters that will hinder the party´s progress until you make it to the chamber where one of the Dark Gods himself resides.
Floor Master Edit
48.Underground Temple Investigation
Rewards: Medal of Power, Magic Shield and Welsh Cane.
The party must find a bell B2F (x3,y4);then you must find several books scattered through the floor, and read them. Return to the room with the bell and fight a Samael.
Reward: Calamity Bow.
50. Man-eating Spider
This quest must be activated by overhearing a person at the tavern talking about some man-eating spiders at the dephts of the Sanctum. Head to B4F and search all over the area until you find many spider eggs.
Upon investigating the eggs, you will trigger a fight against an Arachne, defeat them all to complete the quest.
The player can try to steal extremely dark and powerful Dark Crystals from the final boss, however, this is the only opportunity to do so.