588K views · 3.1K reactions | Today we are taking you on a private tour of Black Dolphin Prison, Russia's most violent and brutal penal colony where the absolute worst criminals wind up and never leave! Find out why this prison is a horrific place to serve out your sentence, especially since cannibals often occupy the cells around you! You won't want to miss this new insane video, check it out now! | The Infographics Show | Facebook