Chacaltaya is a glacierial mountain range in Bolivia with an elevation of 5421 m (17,785 feet) an a view of Lake Titicaca in the distance. The glacier is about 30 km from La Paz, near Huayna Potosà mountain. As it is one of the highest glaciers in South America, Chacaltaya is also one of the first glacial ranges to decrease markedly in size due to climate change. Although the glacier is over 18,000 years old, over 80% of it has melted since 1987 and it is expected to disappear by 2008.