Tolo Channel
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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. Hoi Hap is the modern term for a sea channel. It is named red gate for the distinctive red-coloured sedimentary rocks (rich in iron) to its north.
The channel is the most obvious geologic fault in Hong Kong; the fault line runs in a south-westerly direction through Tide Cove towards Lai Chi Kok. The rocks at the north of the channel are sedimentary while those at the south are igneous.