This area is a derelict lyrium mine. Memories speak of an "unknown disaster" that led to its abandonment long before the First Blight. A Titan awoke beneath the mine in the time of King Orseck Garal and the rhythm of its song "bled despair". The earthquake caused by the titan destroyed the mine.The Buried Sea has a subtle but eerie blue color but has reportedly large waves and it is thus dangerous to stand too close. Swimming is also inadvisable because of significant lyrium concentration on the water.
At an unspecified time after the First Blight the Sha-Brytol started inhabiting these caverns but left the lyrium veins unexploited and by 9:41 Dragon the veins are overgrown so much that Varric Tethras jokingly remarks that he would have been the richest dwarf in the Dwarven Merchants' Guild if he exploited the untapped lyrium. However such venture is unrealistic considering the extreme dangers involved. The Inquisitor may visit the location as part of The Descent (quest) along with Shaper Valta in hopes of discovering the source of the earthquakes.Inside the caverns there is a strange altar with various blood markings around it and it is guarded by an arcane horror.
- The Descent
- Holding the Deep Roads
- Chronicles of Forgotten Wars
- Mugs in the Deep Roads
- Gears in the Deep Roads
- The Nug King (unmarked side quest)
- Deep Roads Expeditions: Bastion of the Pure Bridge
- Deep Roads Expeditions: Bastion of the Pure Cretahl Hunting
- Deep Roads Expeditions: Bastion of the Pure Excavation
- Deep Roads Expeditions: Bastion of the Pure Ore Harvesting
- Deep Roads Expeditions: Buried Sea Bridge
- Deep Roads Expeditions: Patrolling the Bastion of the Pure
- A statue which bears the likeness of Mythal and an object which looks like an eluvian lie broken in the caverns. It is unknown if this is intentional or the objects were simply recycled from the base game.
- A supply caches can be found in Bastion of the Pure.