Real Underground Kingdom That Has Existed for Millions of Years Went Unnoticed, Until Recently…

5 August 2016

 - In 1991, Ho Khanh, a local farmer was out gathering wood in the dense jungle of Vietnam’s Phong Nha-Ke Bang National Park, when he stumbled upon an enormous cave entrance. The roar of a rushing stream and the whistling sound of wind in the cave can be heard through the entrance located in a limestone cliff.

According to Khanh, it “felt like something from the underworld.” He soon forgot the cave’s location until he met British spelunkers exploring the area, some 20 years later. He began looking for the cave entrance again, which he found in 2008. The following year, he led an international team of scientists from the British Cave Research Association, led by Howard and Deb Limbert, in exploring what is now known as Son Doong Cave, the largest cave in the world.