The University Museum has one of the largest collections of Nubian material in the United States, due in part to its excavations at sites in Lower Nubia such as Shablul, Areika, Karanog, Aniba and Buhen under the direction of David Randall MacIver and Sir Leonard Woolley during the years 1907-1910. In addition, the Museum participated in salvage campaigns at the sites of Toshka and Arminna during the 1960's in an effort to excavate sites that would be flooded by the construction of the Aswan High Dam. Materials in the Museum's collection span a period from prehistory through the Christian era.