Top 10 Ancient Civilizations With Advanced ...
Apr 08, 2021 · When some of the more than 400 gravel hills on New Caledonia were excavated in the 1960s, cement columns of lime and shell matter were carbon dated by Yale and the New Caledonia Museum as having been made before 5120 and 10,950 These weird cement columns can be found in the southern part of New Caledonia and on the Isle of Pines.