Por Kai Shan, Mountain summit in Islands District, Hong Kong.

Por Kai Shan is a 482-metre mountain on Lantau Island in Hong Kong's Islands District, southeast of Tung Chung. To its west stands a second summit, Pok To Yan, and Sunset Peak lies to the south. The two peaks and the shrubland between them form a 76.4-hectare Site of Special Scientific Interest.

The local government designated this mountain and the nearby Pok To Yan peak as a Site of Special Scientific Interest in 1994. This protection status recognized their environmental importance for the region.

The name Por Kai Shan means "woman's hair bun mountain", referring to the shape of the summit. The mountain and neighbouring Pok To Yan were together declared a Site of Special Scientific Interest on 13 August 1994, covering 76.4 hectares, because of the rare plants in the shrubland between the two peaks.

You can reach the mountain from Tung Chung MTR station exit D, then take local bus services to the trailhead. Wear sturdy shoes and bring plenty of water, as the paths cross rocky and sometimes steep ground.

The mountain is home to more than 200 native plant species, including several protected varieties found only in this area. This plant diversity makes it an important location for studying the region's natural vegetation.