Stairs to Floor 4 from Floor 1?

[CnEY]

While wandering around the first floor on my second playthrough, near the northwest of the map I noticed off to the left what appears to be stairs marked for Floor 4.  Given that the act only spans 3 floors, are those stairs even supposed to be reachable?  Are my eyes deceiving me?

(Sorry I don't have a screenshot at the moment.)

PS: This is a great game, and I'm happy to see the developers are still planning to put even more into it.  I got pointed to this by a coworker and friend; probably would not have discovered it for a few more months otherwise.

[IceyCocaine]

Those stairs are for later use in the game. They are able to be reached, but only when needed ^^

[CnEY]

Heh, okay.  Thanks for explaining in spoiler-free fashion.    That's actually kind of clever then, I was more concerned I was missing a big secret during the first act.