Boyuk Kapanak is a village in the Alexandropol uezd of the former Iravan governorate, in the former Duzkend(Akhuryan) district, and currently in the Shirak province. The provincial centre lies 32 km to the east of the town of Gumru, and at a height of 2,045 m above sea level. It had been under the subordination of the former Gumru (Leninakan) district until 1937. It was marked on the five-verst map of the Caucasus.

The original inhabitants were Azerbaijanis who were driven out of it by the Armenian armed units after Armenians had been removed from the Erzurum province of Türkiye in 1877–1878 and settled in the village. At present, only Armenians live there.

The toponym was coined on the basis of the ethnonym “kapanakchi” derived of the word “kapanak” used in Old Turkic in the meaning of “a felt cloak”. The word “kapanak” in the sense of “a felt cloak” is also encountered in “The Book of Dede Korkut”. “Boyuk” denotes a distinguishing feature.

It was renamed “Musaelyan” by decision of the Armenian SSR Presidium of the Supreme Soviet dated 3 January 1935. At present, the village is referred to as “Erzurum”. According to the law “On the administrative-territorial division of the Republic of Armenia” dated 7 November 1995, it was integrated into the administrative area of the Shirak province.

Geographic coordinates: latitude: 40°45’ N., longitude: 43°59’ E.