Is a crouch entry spot. There is no way to boost off of it other than props or other zombies. Since there is a small gap at the bottom, humans can shoot through the gap or the wood to knock away the props. You can get a bit of a run-duck-jump to fly right in there, but with how well players communicate on ZM, i think it might be a problem. I didn't have too much of a problem getting in, but that's because i was a mother zombie and my head was through the roof when i was jumping.