Tag:natural=scree

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Public-images-osm logo.svg natural = scree
Scree.jpg
Description
Unconsolidated angular rocks formed by rockfall and weathering from adjacent rockfaces
Group: Natural
Used on these elements
should not be used on nodesshould not be used on waysmay be used on areasshould not be used on relations
See also
Wikidata
Status: in use

Scree is an accumulation of unconsolidated angular rocks. See scree on Wikipedia.

More specifically scree is formed by rockfall from adjacent rockfaces and often accumulates in the form of sloped cones called talus. Scree consists of rock fragments with sharp edges that can vary in size from millimeters to meters.

Do not use this tag for loose rounded gravel on beaches or in river beds - in those cases use natural=shingle instead.

How to map

ElementArea.png

To map an area of scree you can just draw a line closing on itself, marking the area of scree and tag it natural=scree. To map large scree covered areas you can use Relation:multipolygon with the same tag.

The rockface above the scree deposit can be mapped using natural=bare_rock or natural=cliff.

Examples

A classic example, The Screes above Wastwater

Scree from aboveScree under slabsScree under cliff

Various screes above the Nant Ffrancon valley in North Wales, showing that scale and location of screes are dependant on the rock from which they are formed.

Rendering

Currently rendered in Mapnik in bright gray-brown color with a dot pattern at high zoom levels.

  • Mapnik (2016-05)

See also