Lucifer used one crypt to store the angel tablet sometime in the distant past since gaining possession of it. The location of the crypts was kept secret, only the demons closest to Lucifer were aware of where they were, and what they contained. At sometime in the past, over a hundred years before 2013, Azazel, Lucifer's most trusted loyalist, took Meg to visit them. The crypt that housed the angel tablet later became the rendezvous of Crowley and Naomi, in which the demon proposed a deal with the angel, who then left even before the deal was introduced.