I doubt its even in there, as the structure itself seems to lack any sort of solidness..heck i dunno how to explain it, but when i did just see this thread, i thought id at least look,
managed to float over there, but the dock has no solid floor, and the cave that leads from it, i wouldnt know where it leads, wouldnt let me go very far before i started floating down again through the island. also the boat doesnt seem to work..maybe it would if i could actually get ON the dock, not a few inches above it. just there was no way to that i found, always was above or below the dock, or in the cave trying to touch ground.
oh well..they better add something cool to it in the future