Siberia

Siberia is a geographical region in Russia.

Imprisonment of Anton Vanko
Siberia was the place chosen by Soviet authorities to imprison Russian physicist Anton Vanko after he was deported back to the U.S.S.R. in 1967.

Soviet government sent him to a prison in Siberia, serving for 20 years, due to being unable to develop the Arc Reactor technology by himself, given that he developed it in the United States with Howard Stark, the man who ordered his deportation.

Vanko left Siberia and returned to Moscow following Premier Gorbachev’s call for democratization in January 1987, living in poverty with his son, Ivan Vanko.

Undercover Mission
S.H.I.E.L.D. agent Shaw infiltrated a Russian underground prison in Siberia in order to collect information about a separatist group in South Ossetia and a weapon they managed to obtain, the Overkill Device.

Phil Coulson got himself captured and brought to the same prison, in order to provoke his captors and being interrogated, as the interrogator was none other than agent Shaw. Coulson revealed to Shaw his cover had been blown and needed to escape.

Melinda May and Grant Ward defeated the guards and escaped from the facility, using a motorized sled to arrive at the Bus.