The Spectacled Langur, also known as Dusky Langur, Dusky Leaf Monkey or Spectacled Leaf Monkey, is one of the monkeys most commonly found in Khao Sok National Park. Spectacled Langurs are often seen in treetops in early mornings or late afternoons feasting on fresh leaves and fruit. The best place in Khao Sok to see them is the Cheow Larn Lake, but if you are lucky and get up early you can also see them along the treks leaving from the National Park Headquarters. The name langur comes from Hindi meaning ‘the one with a long tail’. This very long tail makes it easy to differentiate langurs from other monkey species living in the same area. Spectacled langurs are listed as ‘near threatened’ on the IUCN Red List.