Shalfak

Shalfak (originally Waf-Chastiu, "subduing the foreign lands") is an Ancient Egyptian fortress once built up on the western shore of the Second Cataract of the Nile River on what is now an island in Lake Nubia in the north of Sudan.

==History== Set up in the Middle Kingdom under Senusret III, Shalfak is one of a chain of 17 forts which the pharaohs of the 12th Dynasty established to secure their southern frontier during a time when they sought to expand Egypt's influence. Shalfak, along with the forts of Buhen, Mirgissa, Uronarti, Askut, Dabenarti, Semna, and Kumma, were established within signalling distance of each other.