The single-vault deep underground station is a type of subway station.

The construction of a single-vault station consists of a single wide and high underground hall, in which there is only one vault

Vault (architecture)

A Vault is an architectural term for an arched form used to provide a space with a ceiling or roof. The parts of a vault exert lateral thrust that require a counter resistance. When vaults are built underground, the ground gives all the resistance required...

 (hence the name). The first single-vault stations in the USSR were built in Leningrad

Leningrad

Leningrad is the former name of Saint Petersburg, Russia.Leningrad may also refer to:- Places :* Leningrad Oblast, a federal subject of Russia, around Saint Petersburg* Leningrad, Tajikistan, capital of Muminobod district in Khatlon Province...

 in 1975: Politekhnicheskaya

Politekhnicheskaya (Saint Petersburg Metro)

Politekhnicheskaya is a station of the Saint Petersburg Metro. Opened on 31 December 1975....

 and Ploshchad Muzhestva

Ploschad Muzhestva (Saint Petersburg Metro)

Ploschad Muzhestva is a station of the Saint Petersburg Metro. Opened on 31 December 1975....

. Also in Saint Petersburg was built the first and so far the only two-level single-vault transfer station in Russia: Sportivnaya

Sportivnaya (Saint Petersburg Metro)

Sportivnaya is a station on the Frunzensko-Primorskaya Line of the Saint Petersburg Metro. The station was designed by Alexander Konstantinov, Alexander Bystrov and Andrey Larionov. It opened on September 15, 1997 as part of the Pravoberezhnaya Line. Sportivnaya is Russia's first double-decked...

.

In the Moscow Metro

Moscow Metro

The Moscow Metro is a rapid transit system serving Moscow and the neighbouring town of Krasnogorsk. Opened in 1935 with one line and 13 stations, it was the first underground railway system in the Soviet Union. As of 2011, the Moscow Metro has 182 stations and its route length is . The system is...

 there is only one deep underground single-vault station, Timiryazevskaya, in addition to several single-vault stations at shallow depth. In the Saint Petersburg Metro

Saint Petersburg Metro

The Saint Petersburg Metro is the underground railway system in Saint Petersburg and Leningrad Oblast, Russia. It has been open since November 15, 1955.Formerly known as the V.I...

 all single-vault stations are deep underground, for example Ozerki, Chyornaya Rechka

Chyornaya rechka

Chyornaya rechka may refer to:*Chyornaya rechka, an alternative name for Chernaya River*Chyornaya rechka Municipal Okrug, a municipal okrug of Primorsky District of Saint Petersburg, Russia...

, Obukhovo

Obukhovo

Obukhovo is an urban locality in Noginsky District of Moscow Oblast, Russia, located east from Moscow. Population: -Overview:The settlement is divided into two parts by the M7 auto route....

, Chkalovskaya

Chkalovskaya (Saint Petersburg Metro)

Chkalovskaya is a station on the Frunzensko-Primorskaya Line of the Saint Petersburg Metro. The station was designed by Alexander Konstantinov, Alexander Bystrov and Andrey Larionov. It opened on September 15, 1997 as a Pravoberezhnaya Line station, but it was transferred to Frunzensko-Primorskaya...

, and others. Most of the underground stations of the Bay Area Rapid Transit

Bay Area Rapid Transit

Bay Area Rapid Transit is a rapid transit system serving the San Francisco Bay Area. The heavy-rail public transit and subway system connects San Francisco with cities in the East Bay and suburbs in northern San Mateo County. BART operates five lines on of track with 44 stations in four counties...

 and the central stations of Washington D.C.´s Metrorail

Metrorail

Metrorail may refer to:* Metrorail , a commuter rail system operator in South Africa** Metrorail Eastern Cape, commuter rail lines serving Port Elizabeth and East London...

 system are single-vault designs, as are all the single-line vaulted stations in the Montreal Metro

Montreal Metro

The Montreal Metro is a rubber-tired metro system, and the main form of public transportation underground in the city of Montreal, Quebec, Canada....

.
In Prague Metro

Prague Metro

The Prague Metro is a subway, underground public transportation network in Prague, Czech Republic. It is the fastest means of transportation around the city and serves about one and a half million passengers a day, which makes it the seventh busiest metro system in Europe and the most-used in the...

, there is one undeground station built as single-vault, Kobylisy

Kobylisy

Kobylisy is a Prague Metro station on Line C.- External links :* http://www.angrenost.cz/metro/c/kb.php Gallery and information...

.

See also

• Deep column station
  Deep column station
  The deep column station is a type of subway station, consisting of a central hall with two side halls, connected by ring-like passages between a row of columns...
  
  
• Pylon station
  Pylon station
  The pylon station is a type of deep underground subway station. The basic distinguishing characteristic of the pylon station is the manner of division of the central hall from the station tunnels...
  
  
• Shallow column station
  Shallow column station
  The shallow column station is a type of construction of subway stations, with the distinguishing feature being an abundance of supplementary supports for the underground cavity...