Tourists pose for photos on the Tung Ping Chau island of south China's Hong Kong, March 17, 2013. Tung Ping Chau lies in the northeast corner of Hong Kong and is part of the Hong Kong Geopark. The island is home to shale rocks in various shapes which makes it a popular tourist attraction. (Xinhua/Chen Xiaowei)

Tourists walk on a small path on the Tung Ping Chau island of south China's Hong Kong, March 17, 2013. Tung Ping Chau lies in the northeast corner of Hong Kong and is part of the Hong Kong Geopark. The island is home to shale rocks in various shapes which makes it a popular tourist attraction. (Xinhua/Chen Xiaowei)

A couple take photos of themselves on the Tung Ping Chau island of south China's Hong Kong, March 17, 2013. Tung Ping Chau lies in the northeast corner of Hong Kong and is part of the Hong Kong Geopark. The island is home to shale rocks in various shapes which makes it a popular tourist attraction. (Xinhua/Chen Xiaowei)

A tourist goes for a walk with her pet dog on the Tung Ping Chau island of south China's Hong Kong, March 17, 2013. Tung Ping Chau lies in the northeast corner of Hong Kong and is part of the Hong Kong Geopark. The island is home to shale rocks in various shapes which makes it a popular tourist attraction. (Xinhua/Chen Xiaowei)

A tourist climbs up a shale rock on the Tung Ping Chau island of south China's Hong Kong, March 17, 2013. Tung Ping Chau lies in the northeast corner of Hong Kong and is part of the Hong Kong Geopark. The island is home to shale rocks in various shapes which makes it a popular tourist attraction. (Xinhua/Chen Xiaowei)