Airbase is the largest map in Primal Carnage, and it is also one of the darkest. It is always night and always raining.The map itself is broken up with helipads, destroyed airplanes, a large aircraft hanger, and much more. You'll have to constantly be on edge, as this map makes it very easy for dinosaurs to sneak up on you.
One of the locations that humans will tend to graviate towards is the helipad. It is well lit and a few feet above the thick brush, giving humans a slight advantage against dinosaurs. Even this advantage can be toppled by a T.Rex or a pack of Novaraptors, however. It is very hard to survive long solo on this map, and your best protection definitely is in a group.