What how do I get past the piston room?

Hint 1 of 7:

There's another elevator on the other side of the room, but you need to find
a way to get into it.

Hint 2 of 7:

Look underneath the pistons.

Hint 3 of 7:

Try not to get squashed, of course.

Hint 4 of 7:

Jump into the passageway below the pistons.

Hint 5 of 7:

Search around for a tiny, narrow tunnel that you can't even crawl through.