Environmental Data Coding Specifcation        ISO IEC LogosRight Title Graphic
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Status: STD 2005/06/07
Code: 1222

Concept definition: An elongated <TERRAIN_SURFACE_REGION>, especially one that is relatively narrow, whose longer sides are <TERRAIN_SURFACE_REGION>s of higher <<TERRAIN_ELEVATION>>; terrain channel. EXAMPLES <CANYON>, <GORGE>, dry riverbed.
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