Driving up to Karamea in the Buller region of West Coast, New Zealand, one could be forgiven for thinking "why do this?" Then you reach the end of the road and find a walking track going right up  into the Nelson region.

Before that is the Oparara Basin, a section of the Kahurangi National Park. here are immense limestone formations  and deep caverns, not all of which are accessible by the public. those that are make the visit memorable but for a full experience take the tour with a professional guide- the information you will get make this unforgettable.