The Himalaya mountain range stretches about 2,400 km from Tibet into Pakistan. It began forming when the Indian plate collided with the Eurasian plate. The pressure of the colliding plates forced the crust upward, folding, bending, and twisting rock. The Indian plate still moves north at a rate of about 5 cm/year, which is faster than your fingernails grow. Some mountains in the Himalayas lift up at a rate of 10 mm/year 1. At which type of plate boundary did the Himalayas form?​