Stretching from the frozen Arctic to the hot Equator, Asia is by far the world's largest and most mountainous continent. Much of the land is barren, with vast, empty deserts in southwest and central Asia, and the remote, windswept plateau of Tibet to the north of the Himalayan mountains. Asia also has some of the world's most fertile plains and valleys beside rivers that include the Mekong, Indus, and Euphrates. In Southeast Asia, the land is mainly mountainous or covered in tropical rain forests that are teeming with wildlife.Away from the mainland, scattered on either side of the Equator, lie thousands of islands, many of them volcanic
THE HIMALAYAS
The Himalayas, right, form a massive land barrier between the Indian Subcontinent and Tibet. The range is permanently snow-capped and contains the world's highest peak, Mount Everest. The mountains began to form about 50 million years ago when a moving plate, carrying the Subcontinent, began to push against the Eurasian plate. When the plates collided, the edge of the Indian plate was forced under the Eurasian plate, and the seabed in between was folded up to form the Himalayas.