Tham Nam None

Caving in Phu Hin Bun NPA & Tham Kong Lor

Only recently discovered, Tham Nam None has not yet been fully explored. At 15km, it is one of the longest river caves in Laos, and it's possible to trek into the cave in the dry season. Don't venture into this cave alone; contact Spring River Resort to set up a trip, and take plenty of torches and batteries.