The Kolkar's Booty is located within centaur camps in The Barrens. This chest can only be opened using the [Kolkar Booty Key], that was taken from a random centaur in the area.
Guaranteed 1-3 [Haunch of Meat], as well as items from levels 11-26.
This may include:
Kolkar's Booty locations in The Barrens