what's behind the cellar door?

It's a weird one. This cellar sits below a house some 165 years old. I think it was a root cellar at one point, but over time, was converted into a party room that held lots of kegs of beer. There is a weird smell in this room, but one can never know what that might originate from. There is a fake Christmas tree to the side; if you didn't look close enough, you wouldn't realize that is even a door. More to come this week! And, I took this one with a Pixel camera.