
After successfully destroying the tentacle with a rocket engine, in "Power Up", Freeman must kill a Gargantua alien by baiting it into a room with giant Tesla coils. In "Blast Pit", he must destroy an alien tentacle that has appeared from beneath a nuclear silo. Escaping an Osprey helicopter, he goes back underground in a different location.
#BLACK MESA RESEARCH FACILITY FROM THE OUTSIDE SERIES#
He travels through a series of Cold War-era storage rooms to reach the surface. In "We've Got Hostiles", Freeman encounters soldiers sent to cover up the disaster by killing all of Black Mesa's personnel. He then makes his way through an office complex. In "Unforeseen Consequences", Freeman returns to the Anomalous Materials Lab, fighting his way through the aliens that have started appearing from warps in space. The Resonance Cascade disaster occurs, and Freeman must escape the destroyed chamber. He explores the area, donning his Hazardous Environment Suit, and then enters the test chamber. After noticing the G-Man on a different train, Gordon departs and enters the Anomalous Materials Lab.

In "Black Mesa Inbound", the player controls Gordon Freeman as he enters the facility on a monorail. The inside of the test chamber, during the anti-mass spectrometer test that sparks the Resonance Cascade disaster. At the time, the integration of narrative in the form of interactive cutscenes and NPCs was considered groundbreaking for a first-person shooter. Half-Life was critically acclaimed for both its storytelling and level design. An "anti- mass spectrometer" experiment conducted on Xen matter causes a Resonance Cascade disaster that allows aliens to invade Earth, and is the catalyst for the events of the series. While the facility ostensibly conducts military-industrial research, its secret experiments into teleportation have caused it to make contact with the alien world of Xen, and its scientists covertly study its life-forms and materials.

Located in the New Mexico desert in a decommissioned Cold War missile site, it is the former employer of Half-Life's protagonist, Gordon Freeman, a theoretical physicist, and a competitor of Aperture Science. It also features in the wider Half-Life universe, including the Portal series. The Black Mesa Research Facility (also simply called Black Mesa) is an underground laboratory complex that serves as the primary setting for the video game Half-Life and its expansions, as well as its remake, Black Mesa. Gordon Freeman, Barney Calhoun, Adrian Shepard, Eli Vance
