An employee walks along a pitch of the Petrovskiy stadium, which has been covered with a layer of special film and warmed by ultra-violet lights as air temperatures drop to minus 14 degrees Celsius (6.8 degrees Fahrenheit) in St. Petersburg February 14, 2012.
The stadium will host a soccer match on Wednesday as Zenit St, Petersburg meets SL Benfica during their Champions League Round of 16 match. REUTERS/Alexander Demianchuk (RUSSIA - Tags: SPORT SOCCER)