The Arghandab is a river in Afghanistan, about 400 km (250 mi) in length. It rises in Ghazni Province, west of the city of Ghazni, and flows southwest, passing near the city of Kandahar, before joining the Helmand River 30 km (19 mi) below the town of Grishk. In its lower course, it is much used for irrigation, under the control of the Helmand and Arghandab Valley Authority, and the valley is cultivated and populous; yet the water is said to be somewhat brackish. It is doubtful whether the ancient Arachotus is to be identified with the Arghandab or its chief confluent the Tarnak, which joins it on the left 50 km (31 mi) southwest of Kandahar. The Tarnak, which flows south of Kandahar, is much shorter (length about 320 km or 200 miles) and less copious.
Argandab in the context of Koh-i-Baba
The Baba Mountain range (Pashto: بابا غر Bâbâ Ǧar; Persian: کوه بابا Kōh-i Bābā; or Kūh-e Bābā; Kōh or Kūh meaning ′mountain′, Bābā meaning ′father′) is the western extension of the Hindu Kush, and the origin of Afghanistan's Kabul, Arghandab, Helmand, Farah, Hari, Murghab, Balkh, and Kunduz rivers. The mountain range is crowned by Foladi peak (or Shah Fuladi) rising 5048 m (some old maps and dictionaries: 5143 m) above sea level, and is located south of Bamyan.
The Koh-e Firoz plateau merges farther to the west by gentle gradients into the Paropamise, and which may be traced across the Hari River to Mashad. To the southwest of the culminating peaks, long spurs divide the upper tributaries of the Helmand River, and separate its basin from that of the Farah River. These spurs retain a considerable altitude, marked by peaks exceeding 11,000 ft (3,400 m). They sweep in a broad band of roughly parallel ranges to the southwest, preserving their general direction till they abut on the Great Registan desert to the west of Kandahar, where they terminate in a series of detached and broken anticlinals whose sides are swept by a sea of encroaching sand. The long, straight, level-backed ridges which divide the Argandab, the Tarnak and Arghastan valleys, flank the route from Kandahar to Ghazni.The high jagged peaks above the Hajigak Pass, blue-black and shining, shimmer in the sunlight for they contain an estimated reserve of 2 billion tons of iron ore; Asia's richest deposit. The very steep descent from the Hajigak Pass (3,700 m (12,100 ft)) with its numerous hairpin bends leads to the sparkling Kalu River, known locally as the Sauzao or Green Waters. It is bordered by poplars and several charming villages.
View the full Wikipedia page for Koh-i-Baba