Blue Prince foundation elevator: how to use it

It's not long into Blue Prince when you first find "The Foundation"—a rare draftable room that has the unique attribute of always appearing in the same place on the map. This permanent room has some noteworthy features, like dirt floors with several diggable spots and three doors in the east, west, and south walls. Most importantly, The foundation has a small one-person elevator situated along the north wall of the room over an open elevator shaft.

But the Blue Prince foundation elevator is out of reach...