A col in

geomorphology Geomorphology () is the scientific study of the origin and evolution of topographic and bathymetric features generated by physical, chemical or biological processes operating at or near Earth's surface. Geomorphologists seek to understand wh ...

is the lowest point on a mountain

ridge A ridge is a long, narrow, elevated geomorphologic landform, structural feature, or a combination of both separated from the surrounding terrain by steep sides. The sides of a ridge slope away from a narrow top, the crest or ridgecrest, wi ...

between two

peaks PEAKS is a proteomics software program for tandem mass spectrometry designed for peptide sequencing, protein identification and quantification. Description PEAKS is commonly used for peptide identification (Protein ID) through de novo peptide ...

.Whittow, John (1984). ''Dictionary of Physical Geography''. London: Penguin, 1984, p. 103. . It may also be called a gap or

pass Pass, PASS, The Pass or Passed may refer to: Places *Pass, County Meath, a townland in Ireland *Pass, Poland, a village in Poland *El Paso, Texas, a city which translates to "The Pass" * Pass, an alternate term for a number of straits: see Li ...

. Particularly rugged and forbidding cols in the terrain are usually referred to as notches. They are generally unsuitable as

mountain pass A mountain pass is a navigable route through a mountain range or over a ridge. Since mountain ranges can present formidable barriers to travel, passes have played a key role in trade, war, and both Human migration, human and animal migration t ...

es, but are occasionally crossed by

mule The mule is a domestic equine hybrid between a donkey, and a horse. It is the offspring of a male donkey (a jack) and a female horse (a mare). The horse and the donkey are different species, with different numbers of chromosomes; of the two ...

tracks or climbers' routes. Derived from the French ("collar, neck") from

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

''collum'', "neck", the term tends to be associated more with mountain than hill ranges. The distinction with other names for breaks in mountain ridges such as

saddle A saddle is a supportive structure for a rider of an animal, fastened to an animal's back by a girth. The most common type is equestrian. However, specialized saddles have been created for oxen, camels and other animals. It is not know ...

wind gap A wind gap (or air gap) is a gap through which a waterway once flowed that is now dry as a result of stream capture. A water gap is a similar feature, but one in which a waterway still flows. Water gaps and wind gaps often provide routes whic ...

or notch is not sharply defined and may vary from place to place. Many

double summit Double, The Double or Dubble may refer to: Mathematics and computing * Multiplication by 2 * Double precision, a floating-point representation of numbers that is typically 64 bits in length * A double number of the form x+yj, where j^2=+1 * A ...

s are separated by prominent cols. The height of a summit above its highest col (called the

key col In topography, prominence or relative height (also referred to as autonomous height, and shoulder drop in US English, and drop in British English) measures the height of a mountain or hill's summit relative to the lowest contour line encircling ...

) is effectively a measure of a mountain's

topographic prominence In topography, prominence or relative height (also referred to as autonomous height, and shoulder drop in US English, and drop in British English) measures the height of a mountain or hill's summit relative to the lowest contour line encircling ...

. Cols lie on the line of the

watershed Watershed may refer to: Hydrology * Drainage divide, the line that separates neighbouring drainage basins * Drainage basin, an area of land where surface water converges (North American usage) Music * Watershed Music Festival, an annual country ...

between two

mountain A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher t ...

s, often on a prominent ridge or

arête An arête ( ; ) is a narrow ridge of rock that separates two valleys. It is typically formed when two glaciers erode parallel U-shaped valleys. Arêtes can also form when two glacial cirques erode headwards towards one another, although frequ ...

. For example, the highest col in Austria, the ("Upper Glockner Col", ) lies between the

Kleinglockner At the height of the Kleinglockner is the third highest mountain summit in Austria. However, with a prominence of only 17 metres it is arguable whether it can be counted as an independent mountain, or just as a subpeak of the Großglockner. It li ...

() and

Grossglockner The Großglockner ( ), or just Glockner, is, at 3,798 metres above the Adriatic (12,461 ft), the highest mountain in Austria and highest mountain in the Alps east of the Brenner Pass. It is part of the larger Glockner Group of the Hohe Ta ...

() mountains, giving the Kleinglockner a minimum prominence of 17 metres.Willi End, Hubert Peterka (1990). . Munich: Bergverlag Rudolf Rother. .

References

External links

{{Commons, Mountain saddles, Col
Illustrated Glossary of Alpine Mountain Landforms: Col
Retrieved 16 August 2015. Landforms Oronyms

See also

References

External links