Explanation

The Karakoram Highway (often abbreviated to KKH)

The Karakoram Highway, also known as the Friendship Highway in China, was built by the governments of Pakistan and China

Karakoram highway is also known as N-35

The Karakoram Highway starts from Hassan Abdal.

Karakoram highway was completed in 1979.

its length in Pakistan is 1300 km.

other related question 

The Silk Route is also known as Karakoram Highway