WorkHazard OST file - Zombie Panic! Source mod for Half-Life 2

This OST is dedicated to the level called "zph_pithole" and with will play in-game when playing said map, or appear randomly as part of the larger, pre-existing OST.

The level takes place within a chemical facility, overrun by the dead. Survivors are investigating the leads between the facility and the outbreak, and are quickly forced inside the twisted facility by the waves of undead.