This is Penal Colony 7 in Russia's northwest, once part of the Gulag labor camp system. It's where former oil tycoon Mikhail Khodorkovsky was kept before his surprise release on Friday. He was jailed more than a decade ago for a theft conviction his supporters say was politically motivated. Two other Kremlin critics were also given amnesty this week. The mother of Maria Alyokhina, a member of the Pussy Riot punk band, had few details on her daughter's pardon.