Tolo Channel

Tolo Channel or Chek Mun Hoi Hap (Chinese: 赤門海峽) is a channel south of Plover Cove in Hong Kong connecting Tolo Harbour to Mirs Bay.

The Chinese name Chek Mun means Red Gate.

It is named red gate for the distinctive red-coloured sedimentary rocks (rich in iron) to its north.

The rocks along the north coast of Tolo Channel and at Wong Chuk Kok Tsui are the oldest in Hong Kong.

[1] Sham Shung Coast, a belt of coast between Sham Chung Wan (深涌灣; 'Sham Chung Bay') and Tung King Pai (Flat Reef), located on the southern side of Tolo Channel and in the north-eastern part of Sai Kung Peninsula, covering an area of 26 hectares, was designated as a Site of Special Scientific Interest in 1985.