SCP-087-B: Containment Breach Mod

You find yourself inside a set of randomly generated dark hallways and staircases with something lurking below you, and the only way you can go is deeper into the darkness. How deep can you go? (SCP-087-B is located in Site-[REDACTED]. The doorway leading to SCP-087-B is constructed of reinforced steel with an electro-release lock mechanism. The inside of the door is lined with 6 centimeters of industrial foam padding.)