This is totally wrong. Check Google Earth. This is not one large 1km long island. It's several and they have names (Bau, Kokorana, etc.). Here's a link to a U.S. military map with lots of the names of the islands, and even a couple of rivers that are entirely absent from this (https://upload.wikimedia.org/wikipedia/commons/f/f4/Rendova_July_4_1943.jpg)