A runnable area of rock without earth or vegetation should be shown as bare rock.
An area of rock covered with grass, moss or other low vegetation, shall not be shown using the bare rock symbol.
An area of less runnable bare rock should be shown using a stony ground symbol (210-212).
Minimum area: 1 mm x 1 mm (footprint 15 m x 15 m).
Colour: black 30%.
The definition of this map symbol was updated on 20.01.2020: correction of colour: grey or black 25% –> black 30%