People stand on the bank of a lake, with the air temperature at about minus 30 degrees Celsius (minus 22 degrees Fahrenheit), near Gorno-Altaysk, Altai region, February 1, 2015. A group of lakes heated by warm springs, locally known as Blue or Cyan lakes, attract tourists from different regions of Russia. Picture taken February 1, 2015. REUTERS/Andrei Kasprishin (RUSSIA - Tags: ENVIRONMENT TRAVEL)