A jungle map as per the one as affinity describes, void of disruption, the size of AvP2's "Compound" or "Lucifer's fate" will have the same effect. And those aren't huge maps. Gotta have somethin' guys. Paths, Shacks, park benches, Predator Crucifix... some sort of landmarks. Just have to. You need to have places to hide as well. Now, changes in elevation can also give you a sense of direction, and can serve as a landmark, but you still need something more...