This waterfall that isn't really a beach at all, has been a swimming spot for local teenagers for the last 75 years. The name came about after "Unanderra beach" was spraypainted across the underside of the train line, which has now unfortunately been covered up.
To access this cache you will need to park in the small open space on the side of Cordeaux road (marked as waypoint), and walk though the bush along the fence. When you come to a split in the path, you'll have to decide which is the RIGHT way. After crossing the creek you will find yourself under the train bridge, and from here it is up to you.
There is a couple of ways to reach GZ, but either way please be cautious as the cache will be found up high. This cache is LOG ONLY, please bring your own pen.