Tham Pha Ka
Tham Pha Ka, or Tham Phaka, (Lao ຖ້ຳຜາກ້າ) is a karst limestone river cave in Vientiane Province, Laos, located roughly 22 kilometres (14 mi) north of Muang Met. The Nam Fuang River, a tributary of the Mekong River, flows through the cave.

It is potentially the largest cave in Laos., with nearly 9 km of the cave system surveyed and published, and a height of 120 metres and width of 400m recorded so far. The four main natural underground networks of Laos are the Nam Dôn system (45 km), Tham Nam Non (28 km), Pha Soung (21 km) and Chom Ong (18 km).

The cave has been used by the local population for guano extraction as well as for religious retreats. The government of the Lao People's Democratic Republic has been presenting the cave as “ideal for the development of a people-centered ecotourism site”. Recent speleological explorations have highlighted the exceptional nature of this cave and aroused interest in it. The Muang Met tourist office is currently looking for a tourism operator to develop activities there

Tham Pha Ka faces a planned hydroelectric project further downstream - the Nam Fuang Hydropower Project - that threatens to flood most of the lower part of the cave system.
Q9211
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Vientiane Province
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Mekong River
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Chom Ong
LOC
Q86197976
Tham Pha Ka
UNK
Q86197976
Tham Pha Ka
UNK
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