The Cataracts of the Nile are shallow lengths (or whitewater rapids) of the Nile river, between Khartoum and Aswan, where the surface of the water is broken by many small boulders and stones jutting out of the river bed, as well as many rocky islets. In some places, these stretches are punctuated by whitewater, while at others the water flow is smoother but still shallow.
The relief of Gebel Sheikh Suleiman, or Jebel Sheikh Suleiman, is an ancient Egyptian relief generally dated to the late predynastic period of Egypt (Naqada III), or at the time of the first pharaohs circa 3000 BCE. More precisely, it has been proposed that it dates to pharaoh Djer or Djet, who was the third king of the First Dynasty, and who is known for his victorious expeditions to Nubia.
The relief comes from the Second Cataract, one of the most ancient frontiers in the history of mankind, in an area just south of Buhen. It is now kept in the National Museum of Sudan. The relief was transferred to the National Museum of Sudan in Khartoum in 1963, before the drowning of the area by the water of the Lake Nasser.
The Triakontaschoinos (Greek: Τριακοντάσχοινος, "Land of the Thirty Schoinoi"), Latinized as Triacontaschoenus, was a geographical and administrative term used in the Greco-Roman world for the part of Lower Nubia between the First and Second Cataracts of the Nile, which formed a buffer zone between Egypt and later Rome on the one hand and Meroë on the other hand. The northern part of this area, stretching from the First Cataract south to Maharraqa, was known as the Dodekaschoinos or Dodecaschoenus (Δωδεκάσχοινος, "Land of the Twelve Schoinoi"). In the Ptolemaic and Roman periods the Dodekaschoinos was often annexed to Egypt or controlled from it, and the rest of the Triakontaschoinos sometimes was as well.
In 275 or 274 BC, Ptolemy II (r. 283–246 BC) sent an army to Nubia, and defeated the Kingdom of Kush. The expedition pursued several objectives: on the one hand, it curbed Kushite power, which had been steadily expanding for the past century, and helped secure Ptolemaic rule against the native Egyptians of Upper Egypt, who might be tempted to seek Kushite aid in their revolts. In addition, the expedition secured the Ptolemies' control of the supply route for African elephants, which played a crucial role as war elephants in their conflicts with the rival Seleucid Empire, that monopolized access to the larger Indian elephants. As a result of this campaign, the area between the First and Second Cataracts of the Nile, which also included the valuable gold mines of the Eastern Desert, was annexed to Egypt and became later known as Triakontaschoinos.
Lower Nubia (also called Wawat) is the northernmost part of Nubia, roughly contiguous with the modern Lake Nasser, which submerged the historical region in the 1960s with the construction of the Aswan High Dam. Many ancient Lower Nubian monuments, and all its modern population, were relocated as part of the International Campaign to Save the Monuments of Nubia; Qasr Ibrim is the only major archaeological site which was neither relocated nor submerged. The intensive archaeological work conducted prior to the flooding means that the history of the area is much better known than that of Upper Nubia. According to David Wengrow, the A-Group Nubian polity of the late 4th millenninum BCE is poorly understood since most of the archaeological remains are submerged underneath Lake Nasser.
Its history is also known from its long relations with Egypt, particularly neighboring Upper Egypt. The region was historically defined as between the historical First and Second Cataracts, which are now both within Lake Nasser. The region was known to Greco-Roman geographers as Triakontaschoinos.