In northern Sudan in the island of Sai there was evidence of two groups of the Middle Stone Ages and the Acheuleans who were identified as Sangoan that both occupied those lands simultaneously.
The Sangoan's used core-axes as opposed to hand-axes, they had three horizons from 220 to 150 ka ago, the younger hosrizons showed artefacts that were related to the Lupemban Nubian Complex assemblages with examples of red and yellow ochre that may have shown evidence of extra utilitarian activities.
There are still various projects active in the archaeological field in Egypt and Sudan researching into Nubiology both locally and globally from other international countries with an interest in the area.
Many of the historians that are researching into Nubiology archaeology now will typically already have previous background knowledge in other similar fields like Egyptology, European, North America and the Middle East.
These sites showed that it was preferred by these societies to live in more open settlements around the Middle Nile as it was closer to their fields and then if necessary they could then seek refuge in the Nubian forts when it was required.
Excavation of a site in the Western Desert in Egypt by R. Schild was believed to have artefacts that could be a part of Oldowan, they did an examination of some samples of lag gravel from a sandstone ridge located near Gebel Nabta.
From the area around Kaddanarti and Kabrinarti there are three excavation sites near the Third Cataract vicinity that also had evidence of stone finds and bones within the layers of coarse pebbles, it was determined that these artefacts to be Lower Paleolithic and preceded the Acheulean period.