Inside the Awe-Inspiring Xe Bang Fai River Cave
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John Spies/Barcroft Media/Landov
The upstream inflow entrance of Tham Khoun Xe has a verdant forest inside a huge collapsed sinkhole. It is possible to kayak from the resurgence to here and back in one full day. There are several more kilometers of cave in an adjacent fossil passage that visitors can access by climbing the boulder pile.