However, erosion caused by the heavy rains along their south side keeps the Himalayas at about its present height throughout time.

The Indian Plate, as it moves north, is forced beneath the Asian Plate pushing the Himalaya Mountains up. The Brahmaputra River valley coincides with the Indian-Asian plate boundary. Nearly all of the Tibetan Plateau is over 15,000' (more than 4,500m) above sea level.

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