In 1991, a farmer working in Vietnam’s Phon Nha-Ke Bang National Park made an exciting discovery: an unexplored cave, the entrance of which was marked by an intense and frightening roar of water.
When he first saw it, he hesitated to approach it, fearful of what lay beyond. Nonetheless, this cave would later prove to be a priceless treasure for the region and researchers worldwide.
The community had known about its location for many years but had restricted access due to its precarious nature; yet, the farmer who came across it decided to go inside. He found himself in a long dark tunnel that plunged deep into the earth after doing so.