In these caves and galleries, known to man since Paleolithic times, the action of water has created cathedral-like vaults beneath the wooded hills of Mount Lebanon forming one of the world's most beautiful caverns found about 20 km north of Beirut.

The caverns are on two levels: the lower caverns are visited by boat over a subterranean lake 623 meters long, while a dry upper gallery can be seen on foot.

Geologically, the caves provide a tunnel or escape route for the underground river, which is the principal source of the Dog River.

After many years of exploration, Lebanese speleologists have penetrated about 6910 meters from the entry point of the grotto to the far end of the underground river and about 2130 meters of the upper galleries.

In summer you can visit both the upper and lower galleries while enjoying the refreshingly cool temperature inside the caves. The lower section is sometimes closed in winter when the water level is high, but the extensive upper galleries are open all year.