There is a room with a giant chimney right next to the fence on the other end. I think it is a furnace. Here is some captured audio of the room from a few feet

There is a room with a giant chimney right next to the fence on the other end. I think it is a furnace. Here is some captured audio of the room from a few feet away. https://drive.google.com/file/d/1gS1mkYPOeg25npQxWOSr_8j4I-GfyZ0W/view?usp=sharing https://drive.google.com/file/d/1gS1mkYPOeg25npQxWOSr_8j4I-G...