Karakoram
The Karakoram is a mountain range in Asia located primarily in the Kashmir region. The range spans the borders of Pakistan, China, and India, with the north-western extremities of the range extending into Afghanistan and Tajikistan. The Karakoram contains four of the fourteen eight-thousanders, the highest of which is K2, the second highest mountain on Earth.
The Karakoram begins in the Wakhan Corridor in western Afghanistan and extends eastwards into Indian-administered Ladakh and Chinese-administered Aksai Chin, as well as the Chinese province of Xinjiang. Most of the Karakoram is located within the Pakistani-administered Gilgit-Baltistan region. The Karakoram is bounded on the east by the Aksai Chin plateau, on the north-east by the edge of the Tibetan Plateau, and on the north by the river valleys of the Yarkand and Karakash rivers, beyond which lie the Kunlun Mountains. At the north-west corner are the Pamir Mountains. The southern boundary of the Karakoram is formed west to east by the Gilgit, Indus, and Shyok rivers, which separate the range from the north-western end of the Himalaya. These rivers flow north-west before making an abrupt turn south-westwards towards the plains of Pakistan. Roughly in the middle of the Karakoram range is the Karakoram Pass, which was part of a now unused trade route between Ladakh and Yarkand.
The range is about in length and is the most glaciated place on Earth outside the polar regions. The Siachen Glacier and Biafo Glacier are the second- and third-longest glaciers outside the polar regions. The Karakoram is the second-highest mountain range on Earth and part of a complex of ranges that includes the Pamir Mountains, Hindu Kush, and the Indian Himalayas. The range contains eighteen summits higher than in elevation, with four above which include K2, Gasherbrum I, Broad Peak, and Gasherbrum II.
Name
Karakoram is a Turkic term meaning black gravel. The Central Asian traders originally applied the name to the Karakoram Pass. Early European travelers, including William Moorcroft and George Hayward, started using the term for the range of mountains west of the pass, although they also used the term Muztagh for the range now known as Karakoram. Later terminology was influenced by Thomas Montgomerie of the Survey of India, who gave the labels K1 to K6 to six high mountains visible from his station at Mount Haramukh in the 1850s. These codes were extended up to more than thirty.In traditional Indian geography, the mountains were known as Krishnagiri, Kanhagiri, and Kanheri.
Exploration
Due to its altitude and ruggedness, the Karakoram is much less inhabited than parts of the Himalayas further east. European explorers first visited in the early 19th century, followed by British surveyors starting in 1856.The Muztagh Pass was crossed in 1887 by the expedition of Colonel Francis Younghusband, and the valleys above the Hunza River were explored by General Sir George K. Cockerill in 1892. Explorations in the 1910s and 1920s established most of the geography of the region.
The name Karakoram was used in the early 20th century, for example by Kenneth Mason, for the range now known as the Baltoro Muztagh. The term is now used to refer to the entire range from the Batura Muztagh above Hunza in the west to the Saser Muztagh in the bend of the Shyok River in the east.
Floral surveys were carried out in the Shyok River catchment and from Panamik to Turtuk village by Chandra Prakash Kala during 1999 and 2000.
Geology and glaciers
The Karakoram is in one of the world's most geologically active areas, at the plate boundary between the Indo-Australian plate and the Eurasian plate.A significant part, somewhere between 28 and 50 percent, of the Karakoram Range is glaciated, covering an area of more than, compared to between 8 and 12 percent of the Himalaya and 2.2 percent of the Alps. Mountain glaciers may serve as an indicator of climate change, advancing and receding with long-term changes in temperature and precipitation. The Karakoram glaciers are slightly retreating, unlike the Himalayas, where glaciers are losing mass at a significantly higher rate, many Karakoram glaciers are covered in a layer of rubble which insulates the ice from the warmth of the sun. Where there is no such insulation, the rate of retreat is high.
- Siachen Glacier
- Baltoro Glacier
- Hispar Glacier
- Batura Glacier
- Biafo Glacier
- Chogo Lungma Glacier
- Yinsugaiti Glacier
Ice Age
In the last ice age, a connected series of glaciers stretched from western Tibet to Nanga Parbat, and from the Tarim Basin to the Gilgit District. To the south, the Indus glacier was the main valley glacier, which flowed down from the Nanga Parbat massif to elevation. In the north, the Karakoram glaciers joined those from the Kunlun Mountains and flowed down to in the Tarim Basin.While the current valley glaciers in the Karakoram reach a maximum length of, several of the ice-age valley glacier branches and main valley glaciers, had lengths up to. During the Ice Age, the glacier snowline was about lower than today.
Highest peaks
The majority of the highest peaks are in the Gilgit–Baltistan region administered by Pakistan. Baltistan has more than 100 mountain peaks exceeding height from sea level. Following is a list for the highest peaks of the Karakoram. Included are some of the mountains named with a K code, the most well-known of which is the K2.Subranges
The naming and division of the various subranges of the Karakoram is not universally agreed upon. However, the following is a list of the most important subranges, following Jerzy Wala. The ranges are listed roughly west to east.- Batura Muztagh
- Rakaposhi-Haramosh Mountains
- Spantik-Sosbun Mountains
- Hispar Muztagh
- South Ghujerab Mountains
- Panmah Muztagh
- Wesm Mountains
- Masherbrum Mountains
- Baltoro Muztagh
- Saltoro Mountains
- Siachen Muztagh
- Rimo Muztagh
- Saser Muztagh
Passes
Passes from west to east are:- Dandala Pass is the most important and earlier pass. It starts from Ghursay saitang city to Yarqand in China. It is the main trade route between Khaplu, Ladakh, Kharmang to Yarqand, China.
- Kilik Pass
- Mintaka Pass
- Khunjerab Pass is the highest paved international border crossing at. It serves the China-Pakistan Friendship Highway, the "8th world wonder".
- Shimshal Pass
- Mustagh Pass
- Karakoram Pass
- Sasser Pass
- Naltar Pass