nunn announced on 9 november 2005 that a black obsidian rock discovered near natadola in southwest viti levu had originated in the kutau-bao obsidian mine on talasea peninsula on the island of new britain, in papua new guinea, some 4500 kilometers away. although carried throughout the western pacific by the lapita people, it is not often found in fiji. the obsidian, which showed signs of being "worked," probably arrived soon after the initial lapita settlement in bourewa circa 1150bc, nunn said. he theorized that it was kept by the lapita settlers as a talisman, a reminder of where they had come from.