The Tirah (Pashto: تیراہ) region, also called the Tirah Valley (Pashto: وادی تیراہ), is located in Khyber, Kurram and Orakzai agencies of the Federally Administered Tribal Areas of Pakistan (33.73N 71.01E), while its smaller part straddles the border to the north lying in Nangarhar Province, Afghanistan. Tirah lies between the Khyber Pass and the Khanki Valley. It is inhabited by the Afridi, Orakzai and Shinwari tribes of pashtons
The population is rural, while Bagh Malikdinkhel, located in Maidan Tirah, is the traditional meeting place for Afridi jirgas or assemblies.
Lying close to the Pak-Afghan border and difficult terrain, control of Tirah for the government of Pakistan has been difficult. In 2003, for the first time since the independence of Pakistan, Army troops entered the Tirah valley.
It is also an area where the government has been trying to cut down on poppy cultivation. The area also has a history of kidnapping and feuds, the dominant ethnic group here are the Pashtuns. There are minority communities of referred to as Hamsaya (protected peoples) such as the Sikh community who are mainly involved in trading and other professions.
Tirah comprises an area of some six to seven hundred square miles and includes under this general name all the valleys lying round the source of the Bara River. The five chief valleys are Maidan, Rajgul, Waran, Bara and Mastura. Maidan, the summer home of the Afridis, lies close under the snow-bound ridges of the Safed Koh at an elevation of about 7,400 ft (2,300 m). It is an oval plain about seven to eight miles (13 km) long, and three or four wide, and slopes inwards towards the centre of its northern side, where all the drainage gathered from the four corners of the plain is shot into a narrow corkscrew outlet leading to the Bara Valley.
Centuries of detritus accumulated in this basin have filled it up with rich alluvial soil and made it one of the most fertile valleys on the frontier. All its alluvial slopes are terraced and revetted and irrigated till every yard is made productive. Here and there dotted about in clusters all over the plain are square-built two storey mud and timber houses, standing in the shade of gigantic walnut and mulberry trees. Up on the hillsides surrounding the Maidan basin are wild olives in wide-grown clumps, almost amounting to forest, and occasional pomegranates.
Higher still are the blue pines; but below on the shelving plains are nothing but fruit trees. Rajgul Valley lies north of Maidan, from which it is separated by a steep valley and well-wooded spur, eight to nine thousand feet high, and west of the Bara Valley, which it joins at Dwatoi. It is ten miles (16 km) long, four to five miles (8 km) at its widest, and has an elevation of 5,000 ft (1,500 m). It is inhabited by the Kuki Khel Afridis. The Waran Valley is another valley about the same size as Maidan, lying east of it, and separated from it by the Tseri-Kandao Pass. It was the home of the Afridi mullah Sayad Akbar. and is the country of the Aka Khels. After the junction of the Rajgul and Maidan drainage at Dwatoi, the united stream receives the name of Bara, and the valley through which it flows down to its exit in the Peshawar Valley is also known by this name. The elevation of the valley is from 5,000 ft (1,500 m). at Dwatoi to 2000 at Kajurai; on the north side it is hemmed in by the Surghar range, which divides it from the Bazar Valley; on the south lies another range dividing it from Maidan and the Waran Valley.
The heat of the Bara Valley in summer is said to be excessive, malaria is prevalent, and mosquitoes very troublesome, so the hamlets are deserted and the Afridis migrate to the pleasant heights of Maidan. The Mastura Valley occupies the southern half of Tirah, and is inhabited by the Orakzais. It is one of the prettiest valleys on the frontier, lying at an elevation of 6,000 ft (1,800 m). The Orakzais live, for the most part, in the Miranzai Valley, in the winter, and retreat to Mastura, like the Afridis, during the summer months.
The chief passes in Tirah are the Sampagha Pass (6,500 ft), separating the Khanki Valley from the Mastura Valley; the Arhanga Pass (6,99E ft.), separating Mastura Valley from Maidan; Saran Sar (8,650 ft), leading from the Zakka Khel portion of Maidan into the Bara Valley; the Tseri Kandao (8,575 ft), separating Maidan from the Waran Valley, and the Sapri Pass (5,190 ft), leading from the east of the Mastura Valley into the Bara Valley in the direction of Mamanai. The whole of Tirah was thoroughly explored and mapped at the time of the Tirah Expedition.