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Nov 12, 2025, 10:23 pm217 ptsTop
Mongabay
Thirty-five years ago, a Vietnamese hunter stumbled across the biggest cave on the planet — then promptly lost it. Hồ Khanh was deep in the 400-million-year-old karst limestone landscape that straddles central Vietnam and Laos. Beneath Hồ’s feet lay wet cave systems that spanned hundreds of kilometers,…
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