While caching on the island, it's easy to get yourself turned around on roads that look like roads on a map but aren't actually roads and so on. This was one of those spots. We were going to go straight through and found out we couldn't, and had to turn around and there was a lot of "Where are we?" going on while we figured it all out!
The cache is a small square container, about 2½" square and contains a logbook and pencil. Room for small trade loot if you like and we put a few small items in to start off.