Behind the scenes of Portal to Black Mesa. To help save money the Black Mesa Research facility granted us access for one week to film. While there were no real Head crab zombies, H.E.C.U. Grunts, Crowbar wielding heroes, there was a man in a black suit that kept an eye on us from time to time. If you notice behind us there are props from the film including the Portal Gun (A.S.H.P.D.), Companion cube, and Lamarr? the headcrab (now de-fanged).