What remarkable subterranean karstic cave complex north of Beirut features a navigable underground river and spectacular stalactites?

Answer and explanation

Correct answer: D. Jeita Grotto

  1. Step 1: Jeita Grotto comprises two separate but interconnected limestone cave levels totaling almost 9 km in length.
  2. Step 2: The lower cavern features an underground river supplying drinking water to Beirut, while the upper gallery contains massive dripstone formations.
Answer
Jeita Grotto.
Why not the others: 'Afqa Grotto' is the source cavern of the Adonis river; 'Kfarhim Grotto' is a small cave in the Chouf; 'Mgharet al-Kassarat' is near Antelias.

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