Kong Leng Lake, also known as Khoun Kong Leng, is one of the most beautiful natural attractions in Khammouane Province, central Laos. Located near Ban Na Kheu in Hinboun District, approximately 39–50 kilometers northeast of Thakhek, this stunning freshwater lake is famous for its crystal-clear emerald-green waters, dramatic limestone surroundings, and peaceful natural setting. The lake is fed by an underground river flowing through limestone formations, which naturally filters the water and gives it its remarkable turquoise-green color.

Nestled among the limestone karst mountains of the Phou Hin Poun National Protected Area, Kong Leng Lake is often described as one of the hidden gems of Laos. The water is exceptionally clear, allowing visitors to see deep into the lake. Depending on the season, sunlight, and mineral content, the lake can appear emerald green, turquoise, or bright blue, creating spectacular scenery for photography and relaxation.

Local legends add a mystical charm to the lake. Residents believe the lake possesses spiritual powers and that the sound of a gong can sometimes be heard during full moon nights. In fact, the name "Kong Leng" translates roughly to "Evening Gong," reflecting these traditional beliefs that have been passed down through generations.

The lake is a popular destination for swimming, picnicking, relaxing, and enjoying nature. Visitors can cool off in the refreshing spring-fed waters, walk along the shoreline, or simply enjoy the peaceful atmosphere beneath the surrounding limestone cliffs. The area remains far less developed than many other tourist destinations in Southeast Asia, helping preserve its natural beauty and authentic character.

Kong Leng Lake is often included as part of the famous Thakhek Loop adventure route, alongside attractions such as Konglor Cave, The Rock Viewpoint at Phou Pha Marn, and Xe Bang Fai Cave. Its combination of natural beauty, cultural folklore, and tranquil surroundings makes it one of the most rewarding stops in central Laos.

Opening Hours

  • Daily: 08:00 AM – 05:00 PM
  • Open 7 days a week.
  • Best time to visit:
    • November to February for cooler weather.
    • Early morning for peaceful scenery.
    • Midday for the brightest water colors.

Highlights

  • Crystal-clear emerald and turquoise waters.
  • Natural spring-fed lake surrounded by limestone mountains.
  • Excellent swimming and relaxation spot.
  • Rich local folklore and cultural significance.
  • Popular stop on the Thakhek Loop.
  • Beautiful photography opportunities.
  • Peaceful and less crowded than many regional attractions.
  • Located within a spectacular karst landscape.

Visitor Tips

  • Bring swimwear and a towel.
  • Wear sandals or water shoes.
  • Bring cash for entrance fees and local refreshments.
  • Visit on weekdays for fewer visitors.
  • Respect local customs regarding swimming areas.
  • Combine with other Khammouane attractions for a full-day adventure.