Business Insider reveals details of a secret bunker built under Russian President Vladimir Putin's palace. The two tunnels are connected by an elevator that descends 50 meters.

The bunker is built on an area 44 times the size of Monaco, and is isolated from the rest of the country by 17,000 feet of forest. The plans were published as part of a showcase of projects completed by the Russian government in 2010. They were originally published by the Anti-Corruption Center, but have now been republished by Business Insider.