In the early 1990s, Hồ Khanh found a dark opening while moving through the forest of central Vietnam...
SCIENCE
July 16, 2026
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
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.
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.
Author: Space Daily
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