In the far reaches of the vast region of Siberia is the world's deepest freshwater lake. Baikal has depths of over 1,600 meters and is home to a complex ecosystem and unique wildlife. The lake is a source of pride for the Russian people, who call it "the Pearl of Siberia." Ahead of the Sochi Winter Games last year, the Olympic Torch Relay was routed through the lake, with divers carrying the flame under water. And Baikal has been registered as a UNESCO World Heritage Site.