Control description categories: Column C | Column D (Landforms; Rock and boulders; Water and marsh; Vegetation; Man-made features; Special items) | Column E | Column F | Column G | Column H | Special instructions

Column D indicates the feature on which the control flag is placed. These are cross-referenced
to the ISOM 2017-2 (International Specification for Orienteering Maps) and ISSprOM 2019-2
(International Specification for Sprint Orienteering Maps)
symbol or symbols used to represent
them (which are generally harmonised). Note that where a number is given it includes all symbols
beginning with that number (e.g. 509 indicates 509.1 & 509.2).

If a second control feature is required (i.e. for crossing; junction; between) then this must go in
column E. It is not permitted to place two symbols in Column D.

Landforms (ISOM / ISSprOM section 3.1)

Ref.SymbolNameDescriptionISOM/ ISSprOM
1.1TERRACEA level area on a slope.101
1.2SPURA contour projection or “nose” rising from the surrounding ground.101
1.3RE-ENTRANTA contour indentation; a valley; the opposite of a spur.101
1.4EARTH BANKAn abrupt change in ground level which can clearly be distinguished from its surroundings.104
1.5QUARRYGravel, sand or stone working in flat or inclined ground.104
1.6EARTH WALLA narrow wall of earth projecting above the surrounding terrain; may be partially stone faced, usually man-made.105
1.7EROSION GULLYAn erosion gully or trench, normally dry.107
1.8SMALL EROSION GULLYA small erosion gully or trench, normally dry.108
1.9HILLA high point. Shown on the map with contour lines.101
1.10KNOLLA small obvious mound or knoll.109
1.11SADDLEThe low point between two higher points.101
1.12DEPRESSIONA depression or hollow from which the ground rises on all sides. Shown on the map with contour lines.101
1.13SMALL DEPRESSIONA small, shallow, natural depression or hollow from which the ground rises on all sides.111
1.14PITA pit or hole with distinct steep-sides. Usually man made. Used with symbol 8.6 to indicate a rocky pit.112
1.15BROKEN GROUNDClearly disturbed ground with features too small or too numerous to be mapped individually; including animal earths.113
1.16ANT HILLThe mound made by ants or termites.115