K2 is the second highestmountain in the world, at 8,611 metres (28,251 ft). It is also known as Mount Godwin-Austen or Chhogori. K2 is part of the Karakoramrange. It is located in Pakistan.The name K2 came from the first survey of Karakoram. At that time, the surveyors gave each mountain a simple label of "K" followed by a number.