This cache is on an island which is acessable only when the tide is low. At about half tide you can get there with some wading but you can easily have a dry walk at low tide.
GPS was a bit off when checking up on it so if someone could please confirm the accuracy of the coords I would be grateful.
This one may be difficult to spot : Clue - It is a DIY job. What does the island look like it is made from?
This cache also happens to have two brothers. They were all made from the same mold. Cape Maria Van Diemen Light house is the North islands most westerly geocache and is on Cape Maria Van Diemen, just south of Cape Reinga. Its a sign can be found at the entry to the Te Paki stream. Find one and you will have a huge advantage for the other two.