Tourists visit mud volcanoes and geysers at Wai-O-Tapu
Tourists visit mud volcanoes and geysers at Wai-O-Tapu, in the central area of New Zealand's North Island September 26, 2011. Wai-O-tapu or "Sacred Waters", features geysers, mud pools, mineral terraces, colorful hot and cold pools and steaming volcanic lakes that draw thousands of visitors to New Zealand each year. REUTERS REUTERS/Bogdan Cristel (NEW ZEALAND - Tags: TRAVEL ENVIRONMENT SOCIETY)