This undersea bastion, known as Bathysmal Rise, is perhaps the most challenging new dungeon in Northern Arun. This dungeon is home to new Big-Ass Monsters and enemies who employ a variety of new abilities and tactics to test teams of the most seasoned players.

Bathysmal Rise is the last surviving refuge of the once-mighty giants, who conquered the world but incurred the wrath of the gods. No one knows exactly why the giants built Bathysmal Rise, or what purpose it served—only that it is still watched over by the strange beasts and sentinels the giants put in place centuries ago.

TERA: Fate of Arun - Bathysmal Rise Dungeon Preview

Find out more about the official expansion  and the four new dungeons on the official page.