According to the Twelfth Doctor, Crocodilopolis was a place in Ancient Egypt where they worshipped a big crocodile. The Doctor claimed that this was a "useful coincidence". The Doctor hoped to travel with Clara "somewhere nice" like Crocodilopolis after the chronodyne generators the Doctor placed around Coal Hill School sucked the Skovox Blitzer into a time vortex bringing it into the future. (TV: The Caretaker)