The Klang Gates Quartz Ridge (Malay: Permatang Kuartza Klang Gates) is a quartz dyke that runs through northeast of Kuala Lumpur and the state of Selangor, Malaysia within Bukit Lagong-Kanching-Klang Gates region. With the dimension of more than 16 km long and 200m wide, it is longest of its kind in the world. The other major quartz vein in Kuala Lumpur is along Kajang-Cheras road, which is about 8 km long, however the Klang Gates Quartz Ridge is one-of-its-kind because it has four types of quartz formation. The area has five endemic plant species among 265 species, found nowhere else in the world. A rare animal, the serow is found here as well.
Despite being one of the most unusual geological formation in Malaysia, the Klang Gates Quartz Ridge has little conservation and currently being threatened by urban development. More recently, the proposed Eastern Klang Valley Expressway became the latest threat towards the Klang Gates Quartz Ridge, as the expressway alignment may pass through the quartz strip.
Coordinates: 3°13′59″N 101°45′08″E / 3.2331556°N 101.7521095°E