Incorrect Example [#2641]
Be aware! This is an example of an incorrect use of the symbol!
The height of the wall (1.5 m) is at the limit of passability and there is a hedge on the upper side. For this reason it is appropriate to map this wall as uncrossable.
Gallery
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Retained wall (height approx. 1.5 m) near Temelín, Czechia. Photo by: Luděk Krtička (CC BY-SA 4.0)