This image shows details of New Caledonia's main city, Noumea, which is built on a peninsula that juts into the lagoon on the southwest side of the island. The reefs here face problems from pollution and overfishing. The tourism industry is very important to the economy of Noumea, with extensive hotel development in the city and along the southeast coast of New Caledonia Island. The picture shows how urban development extends to the steep slopes of the coastal hills. Image courtesy of NASA.