In 1384 S.H, the Kerend-e Gharb district was turned into Dalahoo city and become the fourteenth city of Kermanshah province. Currently, Dalahoo along with Kerend, as its center, includes a central part and Ghahvareh. Also, five rural districts namely Guran, Gholkhani, Banzarde, Babajani and Bivehnij and 154 villages are the subsets of this city.
Dalahoo shares land borders with Javanrood and Salas-e Babajani to the north, with Gilan Gharb to the south, with Eslamabad-e Gharb to the east, with Kermanshah to the northeast, and with Sarpol Zahab to the west. The distance between this city and Kermanshah is about 100km.
Dalahoo, Kerend, Hurow, Zamkan and Barishah rivers are flowing in Dalahoo city and Nava mountain is also placed here. The weather here is mountainous and cold, therefore, the best time for traveling to this place is spring and summer.
Most of Dalahoo people are from Kerendi tribe and speak in Kordi with Kerendi, Jafi, Kalhori and Gholkhani dialects. People have partly maintained their local customs and they adhere to the traditional rituals and manners.
Interesting among the natural attractions of Dalahoo are Sarab-e Kerend, Sarab-e Shalan or Rijab, also known as Rizhav, Sarab-e Gale Zanjir and Sarab-e Rashmineh. It is the mountain climbing and nature trekking in the heart of Rijab or Rizhav that attract people to this region. Piran or Rijab waterfall is one of the highest waterfalls in Iran which is located inside a pristine and high valley is among the attractions of this region that one can capture an extremely beautiful view of it from Zhalkeh village.
The complex of Yazdgerd Castle is one of the famous historical attractions of this region which is placed on the highest part of Dalahoo mountains after Banzardeh. The plaster wall, castle, kitchen and Ban dome are different sectors of this building.
The best-known mausoleum of Baba Yadegar in Rijab, Abdollah ibn-Omar mosque, Davoud Kosavar temple, Seyed Shams-ud-din Heydari mausoleum and house, the mausoleums of Pir Penyamin, Pir Mosa and Bohloul are the holy attractions of the region. Moreover, Taq-e Gara construction, the memorial of Sassanid period, is seen in Rijab T-junction just along the main road of Sarpol Zahab.
There exist so many lush villages around Dalahoo with natural and historical attractions; like the Ban Zardeh village which embrace the remains of several castles and towers and Harir village with an amazing nature. in addition, one can see in Sorkhe Dizeh village a nomadic lifestyle.
The most popular occupations in Dalahoo are agriculture, animal husbandry and making handicrafts especially Tambour. The local foods of this region are highly popular such as Souraneh pottage, Paghazi Kuku, acanthus stew, Tarkhineh pottage, apple rice (Sib Polo) and different kinds of kebab.