High Quality Content by WIKIPEDIA articles! Chan-Chan is an archaeological site and beach on the coast of the commune of Mehuín in southern Chile. Chan-Chan is known to have been inhabited by hunter-gatherers during two periods of the Middle Archaic, separated by a hiatus. One period spans from 6420 to 6250 BP and the other from 6130 to 5730 BP. The beach of Chan-Chan extends on the north to Huezhui tombolo and on the south to a peninsula. The archaeological site itself is located above the beach, on a coastal terrace, that was formed by sediments of allochthonous (exotic) and autochthonous (local) origin. The allochthonous material consist of volcanic rocks as well as retransportated mollusc shells.