Early in his reign, Amenemhet I was compelled to campaign in the Delta region, which had not received as much attention as Upper Egypt during the 11th Dynasty.[16] In addition, he strengthened defenses between Egypt and Asia, building the Walls of the Ruler in the East Delta region.[17] Perhaps in response to this perpetual unrest, Amenemhat I built a new capital for Egypt in the north, known as Amenemhet Itj Tawy, or Amenemhet, Seizer of the Two Lands.[18] The location of this capital is unknown, but is presumably near the city's necropolis, the present-day el-Lisht.[17] Like Mentuhotep II, Amenemhet bolstered his claim to authority with propaganda.[19] In particular, the Prophecy of Neferty dates to about this time, which purports to be an oracle of an Old Kingdom priest, who predicts a king, Amenemhet I, arising from the far south of Egypt to restore the kingdom after centuries of chaos.[17]