Tang-e Gharu
Tang-e Gharu, also known as Tang-e Gharo (Pashto: تنگ غارو), is a gorge and a mountain pass in the Hindu Kush mountain range of Kabul Province, Afghanistan. The Kabul River passes through the gorge flowing eastward. The Kabul–Jalalabad Road runs through the gorge, parallel to the river. Construction on the road began in the 1940s, and was completed in the 1960s. Both the pass and the road are considered of major strategic importance, as they provide a connection to Pakistan and Russia. Due to heavy usage during most recent conflicts in Afghanistan, as well as frequent traffic accidents, the pass and the surrounding area are heavily damaged and periodically closed off.
The cliffs of Tang-e Gharu gorge are a blue-grey limestone, which was formed some 250 million years ago. The gorge itself is only about 2 million years old, however, and was formed as a combination of water erosion from the river and the collapse of an underground river channel.
Coordinates: 34°33′0″N 69°30′00″E / 34.55000°N 69.50000°E
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