A big portion of the Cheliabinox shooting star, which suddenly showered Kakesus mountain range of Russia in February 2013 escaping all astronomers vigil, has been recovered from nearby Chelberkool lake. The piece of stone is more than 570 kg. in weight and, probably 4.5 billion years old - the age of our planet.
Recently Russian scientists found a 20 feet wide hole on the deposited ice of Chelberkool lake. Further investigation revealed a portion of the meteor has created the hole and it was buried 8 feet below the lake's bottom.
Despite caution, the piece of the meteor broke up to three pieces during the recovery process.