When did the Himalaya Mountains begin to form?

The Himalayas began to form between 40 and 50 million years ago, according to the U.S. Geological Survey. The formation of the range began when two large land masses, modern day India and Eurasia, collided.

The Himalayas are still growing, reports the USGS. The mountains are growing as much as 1 cm each year. This means that the mountains could grow 10 km taller over the next million years if this growth rate continues. The growth happens because India is still pushing itself into Eurasia. At the same time, Tibet is pushing north and forcing parts of Asia to move towards the east into the Pacific Ocean.