Sörgel was the originator of the idea of Atlantropa—a utopian continent created by damming the Strait of Gibraltar, the Dardanelles, and the Congo river. His idea called for the damming, and thus lowering, of the Mediterranean Sea level and then making use of the difference between the Mediterranean and the Atlantic sea levels to generate hydro-electric power. Sorgel's idea to lower sea levels would increase the dry land areas around the Mediterranean and provide overland access to Africa.