People stand on large hexagonal columns of volcanic rock on Ninepin Group, also known as Kwo Chau Islands, southeast of Hong Kong in this handout photo released August 30th, 2012. An ancient supervolcano that last erupted 140 million years ago, considered as one of the oldest supervolcanos, has been discovered in the southeastern part of Hong Kong, the Hong Kong Geological Survey under the government’s Civil Engineering and Development Department said on Thursday. It added that this is the first discovery of an ancient supervolcano in southeastern China. |
