Riders compete on the frozen Yenisei river during the 42nd Ice Derby amateur horse race near the settlement of Novosyolovo, some 250 km (155 miles) south of the Siberian city of Krasnoyarsk March 19, 2011. The Ice Derby has been held in Novosyolovo annually at the end of each winter since 1969, drawing participants from the entire region. Source: REUTERS/Ilya Naymushin
