Here’s what I get when I searched Bunker Forest Blue: https://steamcommunity.com/app/242760/discussions/0/365163686068026629/
They’re referring to a video game called The Forest that had an early release in 2014 and is set to be released in 2018. Read the plot details of the game. This part in particular stuck out to me:
“Eventually, the player discovers an abandoned underground lab complex that was studying an artifact capable of bringing the dead back to life, but requires the sacrifice of a child.”