Jin Island or Tiu Chung Chau (Chinese: 吊鐘洲; lit.
[3] The best-known sea cave in Jin Island is Kam Chung Ngam (金鐘岩), commonly known as Goldfish Wagging Tail (金魚擺尾).
Tourists can get a perfect shot of the fish shape from the top of the hill.
The Ung Kong Group Special Area (甕缸群島特別地區) covers 176.8 hectares and was designated in 2011.
[5] The geology of the area is characterised by volcanic rocks of the Cretaceous periods.