"A volcanic island about 60km off the Bay of Plenty coast, White Island was once the site of an unsuccessful sulphur and gypsum mining experiment. This island is now an official sanctuary, harbouring many varieties of native birds in its pohutukawa forest." The card does not mention, but this is New Zealand's only active marine volcano! You can actually take a tour out to the volcano, during which you must wear hardhats and masks and ride aboard an inflatable dinghy to get there! We considered it, but only briefly, as my foot problem would likely have made it difficult to make the trek.