|Inspiration:||Call of Duty: Modern Warfare 3|
Underground is one of the oldest maps in MCInfected. Like Express, it is a railway station. Often, many players work together to defend an area behind an iron fence. This spot is usually overrun by zombies, and is quite difficult to escape once there are a few zombies inside. However, if it is successfully defended for the entire game, it is possible for the majority of humans to survive. In this way, Underground is balanced similarly to Hardhat and Downturn, although it is balanced more in favor of zombies.
Some humans choose instead to take shelter on a balcony which is accessed, with some difficulty, from a nearby window. Others hide in secluded corners and behind doors.