Theres a bug in FHI-ArcticDam where the vehicles can drive straight through that dam static mesh (no pun intended.). In one place you'll fall down a cliff and be stuck outside of the actual play area. If you try to get back via the translocator the beacon will bounce off of the invisible inside of the staticmesh. So you can only jump off the terrain into the bottom of the subtracted cube of the level and die via kill-z.