The himalayas,

the most majestic and highest mountain range in the world, lie principally in China. Also the longest mountain range in China,they stretch for 2400 kilometres from West to east and 200-300 kilometres from north to south in China's Tibet, Pakistan,India, Nepal ,Sikkim and Bhutan. The main China of the Himalayas has an average elevation of more then 6000 metres, far exceeding the average height of any other mountain range in the world. Forty Himalayan peaks exceed 7,000 metres and 11 pass the 8,000-m. mark. mount qomolangma, towering 8,848.13 m. on the China-Nepal border, is the highest in the world. The Himalayan peaks are covered with ice and snow all year round (Himalaya means "abode of snow" in Tibetan), their glaciers cover some 10,000 square kilometers. The northwestern slopes of the Himalayas are dry and cold, with sparse plant growth, while the southern slopes receive plentiful precipitation. a sub-tropical scene is not unusual in Zayu and Medog areas in southern Tibet.
The Chinese Academy of Sciences through several extensive surveys of the Himalayas has collected a wealth of scientific data. Discoveries of numerous fossils of marine animals and plants, including those of a huge ichthyosaur 160 million Years old found at an altitude of 4,800 metres, reveal that the Himalayas were once a vast expanse of sea. The mountain range has continued to rice in elevation at a yearly speed of 0.33-1.27 cm - which indicates that it is once of the world's youngest range