The Logar River drains a wide tract of country, rising in the southern slopes of the Sanglakh Range and receiving tributaries from the Kharwar hills, north-east of Ghazni. It joins the Kabul River a few miles below the city of Kabul. The fertile and well irrigated Logar Valley, which is watered by its southern tributaries, is about 64 km (40 miles) long by 19 km (12 miles) wide. Lying in the vicinity of the capital, the district contributes significantly to its food supply.
A large ancient city was discovered in 2002, just south of Pul-i-Alam, dating back at least 1,700 years to Kushan times. It contains numerous multi-storied buildings and temple and covers an area of about 30 km². It has been extensively looted during the recent war with many antiquities being sold on the black market.