Neiafu is a small seaside town of a few thousand stuck on the sides of a very deepwater harbour.I donrsquot understand the geology of Vavarsquou the main island seems to be called Vavarsquou and has lots of islands to the south. There is obviously volcanic activity plus tectonic uplifts and lots of coral reefs however I have no idea why this area has such deep water. Neiafu Harbour fo