Caught the bus back to Auckland. Got there about lunch time and texted a friend who happened to be in town. Spent the afternoon investigating the beaches at places called Piha and Wareware. The sand on many NZ beaches is, or contains, a lot of volcanic ash so they are quite black. The beach at Piha is where the movie "The Piano" was filmed. Going to have to watch that sometime to see if I can recognise the terrain.