|The following is based on Van Buren and is not canon.|
Ouroboros is a village in Western Utah. It is where Hecate, the mad tribal "goddess" resides, as well as the Vipers, a group of raiders from the west who serve her. Jordan Dae, the captain of Ouroboros' elite city guard, also resides here.
Behind the scenes
In Greek, Ouroboros (ουροβόρος όφις) means "tail-devouring snake," and is usually depicted by a snake or dragon eating its own tail.