A Bunker?

Image result for wayne backyard bunker

If Wayne was not careful with the sheets, then there would be serious accidents happening in the future. After all, the last thing Wayne would ever wish for was for someone to fall through the ground and landing on top of the bunker. Okay, wait, even though we call this a bunker, we are not entirely sure what it is yet, okay? Ignore this and join us as we wait for the whole project to get completed.