In the early 1990s, Hồ Khanh found a dark opening while moving through the forest of central Vietnam. Wind pushed out of it. Somewhere below, water roared. The entrance dropped too steeply for him to continue without ropes, and after leaving the area he could not immediately find it again. Years later, Khanh guided a [...] The post Explorers who lowered themselves into a Vietnamese cave found a passage so vast it holds its own jungle, its own river and its own weather, a hidden world large enough to swallow a skyscraper appeared first on Space Daily .
Explorers who lowered themselves into a Vietnamese cave found a passage so vast it holds its own jungle, its own river and its own weather, a hidden world large enough to swallow a skyscraper
