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A mark naming the hardest section.
Also known as: Hardest move marking, Crux notation climbing
The climbing topo marking identifying the crux, the hardest section of a route.
Identifies the hardest section of a route on a climbing topo.
Contexts: Maps
Records the first ascensionist's judgement rather than a measurement, so a crux marking is an opinion recorded as a mark and different climbers may disagree with it.
Contexts: Maps
A short label or bracket set against the route line at the section it identifies.
A fuller structured visual breakdown is not yet documented for this symbol.