Video Drone Goes Inside Tham Khoun Xe River Cave

Tucked away in Southeast Asia, within the verdant wonderland known as the Hin Nam No National Protected Area, there is a cave called Tham Khoun Xe. Carved out of the rock by the power of the Xe Bang Fai River, it stretches more than four miles end-to-end; averaging 250 feet wide and 185 feet high, it’s one of the largest caves still in the midst of formation. It’s a glorious, beautiful thing. Also, damn near inaccessible to us stateside would-be explorers, because Tham Khoun Xe is located in central Laos.