I meant several fights, whatever form they take.
It doesnt seem like a finished feature. Anycase, if it was me i would move the whole thing outside of the prison or Fort Joy.
Someone in the prison can give the player "directions" to it, mark it on the map etc. Easy to make it a part of some sub quest in prison.
Any idea what to do with that Braccus Rex vault?
The one on the left of the map.
