where is the center of the worlds land mass
39 ° 00 ′ N 34 ° 00 ′ E ﻿ / ﻿ 39.000 ° N 34.000 ° E ﻿ / 39.000 ; 34.000 ﻿ ( Geographical centre of all land surfaces on Earth ( Woods 1973 ) ) , in modern Turkey , 1,000 km north of Giza