What is the most dominant landform in Pakistan?

Google: Major landforms in Pakistan include the Khyber Pass, Bolan Pass, Balochistan Plateau, Indus River plain, Hindu Kush, Karakoram Range and Himalayan Mountains.  The highest elevation in Pakistan is found in the Himalayan Mountain peak K2, which rises 28,269 feet above sea level.

Answer the collision of tectonic plates;