To enter the Vault's central chamber, one needed to speak aloud the number "72". To reach the higher tier where the Piece of Eden could be placed, a correct series of levers needed to be pulled, which were in turn accessed by crossing several thin platforms. After all were activated, a set of stairs would rise up to form an easy path up to the Piece of Eden. The pedestals and levers within the Vault could only be activated by the touch of a descendant of the First Civilization.