Hong Kong UNESCO Global Geopark

It covers a large area around Sai Kung Peninsula in the eastern part of Hong Kong, including High Island Reservoir and Tai Long Wan.

Ninepin Group (果洲群島) is located on the eastern side of Hong Kong, forms a series of offshore islands.

Numerous inclined columnar jointed volcanic rocks create cliffs and coastal scenery around the Ninepin Group.

Sharp Island (橋咀洲) is located in the Port Shelter, to the southeast of the Sai Kung Town, from where it can easily be reached by small boat.

In 2024, experts announced the discovery of the first dinosaur fossils in Hong Kong after bones embedded in a Cretaceous-era rock in Port Island were recovered.

The oldest rocks in Hong Kong, the Bluff Head formation, formed about 400 million years ago during the Devonian Period, are at the northeastern tip of the Tolo channel.

Other than that, there is also a black cherty mudstone on Lai Chi Chong, which is believed to be formed by mud deposited together with silica-rich materials.

Its attractions, such as wave erosion landscape, the shale that resembles a sponge cake structure and the unusually flat lay of the island itself, draw thousands of visitors annually.