As Gordon Freeman rides a monorail in the Materials Transport section of Black Mesa, he learns from a security guard that he must ride to the High Altitude Launch Center to launch a satellite, which the Lambda Team can use to reverse the effects of the Resonance Cascade.
He also discovers the HECU’s true hatred for him, as well as larger reinforcements: sandbag bunkers with rapid-fire sniper rifles, mounted machine gun turrets (manual and automated), and even mounted rocket launchers.
After going round in circles, it seems, for a while, he goes up several elevators and at last reaches the surface again. At the launch site, he sends the rocket up into orbit, and regretfully goes back below ground.
26th June 2012