Durzio is a fabled giant cavern residing beneath the realm Olympia. Spoken of in the "The Blood of Our Fathers", Durzio was said to be the birthplace of the first mortal life. Mythos crafted the cavern by hand, filling it with riches and gems for her first mortal creation. When she was put into rest by other gods and goddesses, it is told that Durzio became Mythos' heart.
The riches within Durzio, also know as the heart of Mythos, are said to be sealed there for eternity, guarded by lava dwelling giants known as Daegohns. Explorers have attempted to travel to Durzio, but have never returned and have been presumed to be killed by these giants, lost their way, or simply starved.