A frozen river is seen located on the outskirts of the Mongolian capital city of Ulaanbaatar

A frozen river is seen located on the outskirts of the Mongolian capital city of Ulaanbaatar April 6, 2012. Mongolia remains the least densely populated country on the planet at 1.7 persons per square kilometer. The population of just 2.7 million people are spread across an area three times the size of France, with two-fifths of Mongolians living in rural areas. REUTERS/David Gray (MONGOLIA - Tags: ENVIRONMENT)

CREDIT: REUTERS

PUBLISHED DATE: 04/06/2012