The fortess of Kofirqala) is located in the village of Boghev, Suchon valley (Gund) of the Shugnan district of of GBAO. This fortress is 30 km far from Khorog. The fortress is located at an altitude of 2390 meters above sea level in the southwestern part of the village of Boghev on a large high rock. It is visible from the village on the main road connecting Khorog and Murgab.
There are several reasons for choosing this high hill to build a fortress. The first reason was that the high hill was a safe place. If the surrounding area was flooded or collapsed due to avalanche, the fortress would be safe from these natural disasters ,above the terrain level. The hill is a good location for building defensive fortress. It is almost impossible to climb this high rock from three sides. Thick walls with towers, windows for shootingand observation posts were built on the cliff above the Boghev gorge, which had strong defensive capability. Fortresses such as Kofirqala were built by the Tajik farmers to prevent the attack and influx of nomads from the Eastern Pamirs to the Western Pamirs.^[1]

[1] See Bernshtam, A. N. Istoriko- arkheologicheskie ocherki Tsentral’nogo Tyan’-Shanya I Pamiro-Alaya. (Moscow, 1952). With tables and maps.

The citadel of the fortress was located on the flat area stretching 120 to 200 meters from the west to the east. Its walls consisted of a square tower and two round towers. There was an arched watchtower at the end of the wall in the eastern part of the citadel. There was a square room at the centre of the citadel which was used by the ruler.   This fortress served as a place for worship.Temples of fire worshipers were built here, the remains of which have survived to this day. These fire temples are located on two small areas, not very large at the top and another at the bottom. They were built in the shape of a circle. A round fireplace was built in the middle. Unlike other temples in Shugnan, their distinctive feature is that they are built in the shape of a circle. The fire temples of the Pamirs were "open" and did not have a roof. This is one of the distinguishing features of the Pamir temples from the famous Zoroastrian temples. Three types of ceramics remain were discovered inside the fortress, some of which belong to the Kushan period, the other to the Hephthalite era, and the third to the Middle Ages. Considering these discoveries it was assumed that the Kofirqala (Boghev) fortress was built in the Kushan period.