The highest mountain range in the world, the Himalayan Mountain Range, has formed at the boundary of the Indian and Eurasian continental masses. The India continent was a small one that separated from the much larger ancient continent Gondwanaland. As it separated, it started moving toward northeast, eventually closing down the Tethys Ocean, and colliding with Eurasia. As the two continental masses started to push against one another, the crust started to lift up because of the enormous pressure, thus gradually creating a mountain range. This process is still not over, and the Himalayas are still growing in elevation, with estimated 8 cm plus each year.
