I think it's just a corridor.
There are two doors for entering it. No special room has a two door entrance.
I don't think there's anything to do with it, it's just a quirk of level gen.
Sometimes the ledge with a chest is just out of view and you won't see it until you get closer.
Other times, it is just an empty room waiting for you to rush in and fall to your death.
It will cost you to find out.
A potion of levetation, a torch to see further, etc.
But a room with a chest beyond a chasm only has one door. This is just a strange room with nothing special.
This threw me for a loop but after looking at the comments, I think it’s the minimalistic version of this taken to its extreme (by chance.)
Edit: cool to see though, thanks for sharing.
Bet you won't jump
