From the Wikipedia page 
Velikoustyugsky District (Russian: Великоу́стюгский райо́н) is an administrative and municipal district (raion), one of the twenty-six in Vologda Oblast, Russia. It is located in the northeast of the oblast and borders with Kotlassky District of Arkhangelsk Oblast in the north, Luzsky District of Kirov Oblast in the east, Podosinovsky District of Kirov Oblast in the southeast, Kichmengsko-Gorodetsky District in the south, Nyuksensky District in the west, and with Ustyansky District of Arkhangelsk Oblast in the northwest. The area of the district is 7,700 square kilometers (3,000 sq mi). Its administrative center is the town of Veliky Ustyug.