Nan Madol is an archaeological site on Temwen Island. It was once the capital of the Saudeleur Dynasty, that ruled the area from 1100 to 1628. The city is constructed within a lagoon, and is built across a number of man made islands, interconnected by canals. The cities name, Nan Madol, actually translates to “the spaces between”, a reference to these canals. The total area taken up by the city is 18km². The stone walls of the main structure run 1.5km long, by 0.5km wide, and are made from basalt rock.