This beautiful alpine lake is 2000 kms to the north of Ulaanbaatar on the border with Russia. It is the second oldest lake in the world, contains 65 percent of Mongolia's and two percent of the world's fresh water. Despite its size it freezes in winter to a depth of 120cm allowing passenger trucks to cross. Mountains crowd the shores and the thick pine forests and beautiful meadows are sprinkled with grazing yak, horse and reindeer.