In what mountain range will you find Lake Titicaca at an altitude of 3800 metres?

Explanation

Lake Titicaca is located in the Andes mountains on the border between Peru and Bolivia. It sits 3,811 m above sea level, making it the world's highest lake with commercial ferry traffic. The lake covers an are of 8,372 km² and is South America's largest, measured by volume. According to old Inka legends both the sun and the moon were born on two islands in Titicaca.