Footage tweeted by the English language Siberian Times shows the 40-year-old woman from Moscow entering the carved-out section of a frozen Lake Baikal, before she started the underwater ice swim.

Buy cool rail-related products on our online store: <a href=" ------------------------------------------------------------------------------------------------------------------------------------------ ...

Siberia offers a tantalizing prize with fewer immediate risks. Its vast reserves of oil, gas, gold, diamonds, rare earth ...

GEOQUIZ: What is the name of the world’s deepest lake, and where is it located? Answer: Lake Baikal. It is located in southern Siberia in Russia, north of the Mongolian border, and is 5,315 feet deep.

Russian Prime Minister Vladimir Putin rides a horse during his vacation outside the town of Kyzyl in Southern Siberia on August 3, 2009.

The Power of Siberia 2 project has been stalled for years, but Beijing is growing concerned about the reliability of oil and gas from the Middle East.