The International Campaign to Save the Monuments of Nubia was the relocation of 22 monuments in Lower Nubia, in southern Egypt and northern Sudan, between 1960 and 1980. The success of the project, in particular the creation of a coalition of 50 countries behind the project, led to the creation of the World Heritage Convention in 1972, and thus to the modern system of World Heritage Sites. It was described in the UNESCO Courier as "the greatest archaeological rescue operation of all time".