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A small solid mound shape.
Also known as: Knoll symbol orienteering, Control description knoll
The IOF control description symbol for a knoll, a small hill or rise in the ground.
Marks a knoll, a small rise in the ground, as the feature carrying the control.
Contexts: Maps
Stands opposite the depression symbol, the two being the smallest positive and negative relief features the system distinguishes.
Contexts: Maps
A small solid rounded mound drawn on a flat base, resembling a contour ring filled in.