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It is bounded on the north and west by the Indus river and is about 19 miles (31 km) long (from east to west) and 9 miles (14 km) broad. Percolation from the Indus makes the area extremely fertile. The population of the area is primarily Hindko and Pashto speakers.
The name "Chhachh" means A bowl type container according to the native language, which was used to drink lassi by the locals. Geographically, the surface of the Chhachh region is like a bowl. Chhachh has been identified with the Chukhsa or Chuskha country of the Taxila copperplate inscription. In the Muslim period it was known as Chhachh-Hazara, or Takht Hazara. Hazro is in this plain.
A small percentage of the population of Chhachh has Pashtun roots and belongs to Qais Abdur Rashid. They are mostly descendants of the tribes of (Khurakhail ) Durrani, Tanoli, Alizai, Yousafzai, Malizai, Kakar, Umarzai, Jadoon, Tareen, Tahirkheli, Sadozai, Khattak and Barakzai. They arrived in the area at around 1000 AD as part of the army of the Ghaznavid Empire and made it their permanent home after defeating the Hindu confederation near Hazro.
Proof of this is that many of the villages and individual quarters are named after Pashtun personalities and tribes, markedly showing who had founded them. These include Nasozai, Musazai, Musakhel, Utman Khel, Saleem Khan, Ghorghushti, and Barazai.
There are some 84 villages in the early 90s but now this figure has increased to more than 90 villages in Chhachh valley, including: (khurakhail)
- Kalu Kalan
- Malak Mala
- Garhi Matani
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