Nanumaga or Nanumanga's an island, an atoll or a district of the Oceanian island nation of Tuvalu. It's a surface area of about 3 km². In 1986 it became a centre of debate by Pacific archaeologists who discovered the submerged Caves of Nanumanga, which found the remains of fire created by pre-historic inhabitants. Geography There're three lagoons, the largest, Vaiatoa, having four islands. There're mangrove woods and dry vegetation. The island has an oval outline, with the longer axis orien… (More on Nanumanga)