An impressive geological sequence is visible at Campbells Bay.  Here you can see the Ototara Limestone dipping impressively down beach.  The outcrop is heavily cemented.  The interesting holes in the limestone are actually shrimp burrows that were further eroded and enlarged around 30 million years ago.  

Walking further up-beach you can see older underlying material including volcanic tuff.

Please be aware the following hazards include: tides, wildlife, sharp and slippery rock underfoot, and falling debris from cliffs. Tsunami risk – if an earthquake is strong or long, get gone.