Superb Belt of the Inferno Pact

Superb Belt of the Inferno Pact is a unique belt in Dragon Age: Inquisition. It requires the Trespasser DLC.

Acquisition
As you enter the Elven Mountain Ruins, take a left at the first intersection. you'll find a room with crates. Use any ability to destroy these crates and go through the Eluvian behind them. Go through the purple fire and loot the chest.