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204 Boulder

from
ISOM 2017-2
204 Boulder (ISOM 2017-2)

Geometry: point.

Definition

A distinct boulder (should be higher than 1 m), which is immediately identifiable on the ground.

Groups of boulders are represented using symbol Boulder
cluster
(207)
or a boulder field symbol (208, 209).

To be able to show the distinction between neighbouring (closer than 30 m apart) boulders with significant difference in size, it is permitted to enlarge the symbol to 0.5 mm for some of the boulders.

Parameters

Footprint: 6 m diameter (7.5 m diameter).

Colour: black.

Correct examples

Incorrect examples