Tham Kong Lo or Kong Lor Cave is a karst limestone cave in Phu Hin Bun National Park, in Khammouane Province, Laos. It is located roughly 130 kilometres (81 mi) north of Thakhek, on the Nam Hin Bun River, which flows into the cave. The karst formation is dramatic and the cave has been cited as a "one of Southeast Asia's geological wonders".
The cave is deep (lasting about 7 kilometres (4.3 mi)) and wide and as high as 300 feet in parts. The locals in recent years have set up vendors at the location to provide to tourists. Inside the cave is a pool which glows a bright emerald colour which locals hold as sacred, believing it to reflect the skin of the Hindi god Indra.
- Kong Lor Höhle, highlights-in-laos.de, retrieved 21 Oktober 2015
- Rough Guides; Jeff Cranmer; Steven Martin; Emma Gibbs; Steven Vickers (20 January 2011). The Rough Guide to Laos. Rough Guides. p. 215. ISBN 978-1-84836-659-6. Retrieved 20 July 2012.
- "Tham Kong Lo Cave". Goseasia. Retrieved 20 July 2012.
- White, Daniel (28 January 2010). Frommer's Cambodia and Laos. John Wiley & Sons. p. 306. ISBN 978-0-470-61583-6. Retrieved 20 July 2012.
- DK Eyewitness Travel Guide: Cambodia & Laos. Dorling Kindersley Limited. 1 June 2011. p. 191. ISBN 978-1-4053-6830-8. Retrieved 20 July 2012.