Traversing Kowloon Reservoir and Shing Mun Reservoir, Section 6 of the Wilson Trail offers a stunning spectacle not to be missed, with azure blue water and luxuriant trees complementing each other. As declared monuments, the structures of Kowloon Reservoir, including the main dam, the main dam valve house, and the recorder house, promote the appreciation of the history of Hong Kong’s water supply, part of which sheds light on how “Monkey Hill” got its name. It dates back to the construction of Kowloon Reservoir. It was found that the reservoir was threatened by the growth of a poisonous plant called Poison-nut, whose fruits, if consumed, could be lethal to humans but harmless to macaques, so the macaques were introduced to ensure the safety of fresh water. Since then, troops of macaques have lived together in harmony along the way from Tai Po Road to Shing Mun Reservoir. As a token of our gratitude to these guards, remember not to feed or intimidate them – this will keep the peace in the area.