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Ghar Parau
Porow Cave is a limestone cave in the Zagros Mountains, north of Kermanshah in Western Iran.[2] At 751 m deep, it is the deepest cave in Iran.[3] Joujar Cave has been reported as the second deepest, at 568 m deep.[3] HistoryA British-led caving expedition to the Zagros Mountains in 1971 led to the discovery of the cave.[1] The cave was explored to a depth of 742 m when the expedition was forced to return to the surface.[1] The explorers believed that the cave might go on much further, possibly surpassing the Gouffre de la Pierre-Saint-Martin system, which at that time was the world's deepest known cave.[4] The team returned the following year and passed their previous limit, but to their great disappointment, the cave sumped almost immediately at a depth of 751 m and could be explored no further.[1] To be "Ghar Paraued" became a term used in British caving for a small, disappointing breakthrough following the great effort to discover new passage.[citation needed] References
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