The type of plate boundary that leads to the creation of mountains is called a convergent boundary. At convergent boundaries, two tectonic plates move towards each other, causing one plate to be forced beneath the other in a process known as subduction. This interaction can lead to the folding and uplifting of the Earth's crust, forming mountain ranges. The Himalayas and the Rocky Mountains are prime examples of mountains formed by the collision of tectonic plates at convergent boundaries.