The Cathedral Caves are two connected limestone sea caves located on Waipati Beach, 15 kilometres (9.3 mi) south of Papatowai, on the Catlins Coast in the southeast corner of New Zealand's South Island. The two main cave systems join together within the cliff and one has a 30 metres (98 ft) high ceiling. Often blue penguins will emerge from the gloom at the far end of the cave. And occasionally a sealion might be around. (Full article...)