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Rock shelter

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Title: Rock shelter  
Author: World Heritage Encyclopedia
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Subject: List of Stone Age art, Howieson's Poort Shelter, Roc-aux-Sorciers, Diepkloof Rock Shelter, Mammoth spear thrower
Collection: Caves, Rock Shelters
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Rock shelter

A rock shelter (also known as a rockhouse, crepuscular cave, or abri) is a shallow cave-like opening at the base of a bluff or cliff.

The rock shelter for which Indian Cave State Park is named.
Rock shelter in the Little Carpathians

Rock shelters form because a rock stratum such as sandstone that is resistant to erosion and weathering has formed a cliff or bluff, but a softer stratum, more subject to erosion and weathering, lies just below the resistant stratum, and thus undercuts the cliff.

Shepherds' rock shelter in Lahaul, India

Many rock shelters are found under waterfalls.

Rock shelters are often important archaeologically. Because rock shelters form natural shelters from the weather, prehistoric humans often used them as living-places, and left behind debris, tools, and other artifacts. In mountainous areas the shelters can also be important for mountaineers.

Transhumant nomads, people who move with their livestock - often from lower permanent winter residences in the valleys to higher summer pastures - frequently build semi-permanent camps, often of rocks.

In western Connecticut and eastern New York, many rock shelters are known by the colloquialism "leatherman caves",[1] as they were inhabited by the Leatherman over three decades in the late 19th century.

In arid areas, wind erosion (eolian erosion) can be an important factor in rockhouse formation. In most humid areas, the most important factor in rockhouse formation is frost spalling, where the softer, more porous rock underneath is pushed off, tiny pieces at a time, by frost expansion from water frozen in the pores. Erosion from moving water is seldom a significant factor.

Sandstone can be used as shingles for roof tops when possible.

The Cumberland stitchwort (Minuartia cumberlandensis) is an endangered species of plant which is found only in rock shelters in Kentucky and Tennessee.[2]

Rock shelter at
Strouds Run State Park

See also

References

  1. ^ CT Museum: Leatherman Caves
  2. ^ Center for Plant Conservation
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