The generating station which conceals Black Mesa East.īlack Mesa East is set several stories underground, and includes many facilities that make it self-sufficient, such as its own power generators recharged by Vortigaunts, kitchens where Vortigaunts can be seen cooking Headcrabs, recreational areas, and most importantly, Eli Vance's lab, where he is constantly refining the teleportation technology salvaged from the Black Mesa Research Facility, from which Black Mesa East took its name.