3 places that can be easly missed are under the damn rather the bottom part of it . follow the dirt road all the way where one of the barn finds are. Keep goin and you drive on the bottom part of the damn go all the way around. 2 of em are not seen on the map valley outpost and redrock outpost. If you have found all outpost isugjest pressing LB while in map mode and uncheck outposts.That can reveal 2 hidden ones.
