Moon Research Lab (survival) mod for Left 4 Dead 2

Well , i passed by so decided to upload my maps here , too. They are really old by the way. Survive on a small abandoned and left-to-rot moon research base which was named Exomalum after it has been created in 1972. In 1976 , the lunar missions were cancelled, all astronauts and people on the moon came back to earth. The research base that was lively once was abandoned and left to rot after a small time it got build. The 4 survivors found this abandoned and forgotten base when they were walking to a new evacuation base further on the moon surface. There is a small console panel that works inside the base , they decided to see if anyone can answer it. Then the survival starts , and zombies started flooding in.