Kūh-Zibad (Persian: کوه زیبد) its peak also called Tir Mahi[1] is a mountain in the province of Razavi Khorasan, city of Gonabad District Zibad in the eastern part of the country, 700 km east of the capital Tehran.

The highest point in the vicinity is 2775 meters above sea level, 17.7 km southeast of Qole-e Tir mahi.

The terrain abutting Kuh-e Zibad is largely barren, with little or no vegetation, thanks to its cold steppe climate and yet - unusually - boasts many named mountains and valleys.

Thanks to a celebrated episode in the poet Ferdowsi’s colossal epic Shahnameh the mountain is famed as the site of Davazdah Rokh (the legendary Battle of the Twelve Combats) and its eastern part is known as The Black Mountain or Kūh-e Gonabad.

The long mountain range is called Qohestan and it extends from Bajestan to Birjand near the border with Afghanistan.