You can find Utgarde Keep dungeon within Howling Fjord.
The coordinates are (57.8,50.3)
1. Prince Keleseth
2. Skarvald and Dalronn
Heroic Differences: Skarvald also Enrages. Dalronn summons two skeletons, interrupt this.
3. Ingvar the Plunderer
/i Avoid frontal cones Smash & Dark Smash. Deals physical & shadow damage. Increases speed with Enrage, this stacks. Move away from spinning axe, lands on player. Interrupts players spell casting with Roars.