Climbing ethics: tick marks, chipping and brushing

Climbing has no referee. Out at the crag there is no staff member checking your harness or telling you where to chalk. The sport runs almost entirely on shared etiquette, passed down climber to climber, and most of it comes down to one idea: leave the rock the way you found it, so the next person gets the same experience you did. Three habits sit at the heart of that, and getting them right marks you out as someone who actually respects the place.

Tick marks

A tick mark is a small dash of chalk you put on the rock to show yourself where a hold or foot is, usually for a blind move you cannot see from below. Used sparingly they are a legitimate tool. The problem is when they pile up.

Walk under a popular boulder and you will sometimes find it plastered in white smears, every hold ringed, the whole line spoiled for the next climber who wanted to read it for themselves. Worse, chalk left in the weather builds up, attracts more chalk, and over time genuinely changes how a problem looks and feels.

The rule is simple. If you tick, you brush it off before you leave. Your beta is your business, not a permanent mark on someone else's project.

Brushing

Brushing is the quiet courtesy that keeps holds usable. Repeated chalking and skin oil build up a glassy residue that kills friction, especially on slopers and small crimps. A soft brush clears that off and restores the texture.

Brush at the right moments:

• After working a problem, brush the holds you have caked in chalk.
• Brush off any tick marks you made.
• Use a soft brush, never a wire one, which scratches and polishes the rock.

Avoid brushing soft or damp rock such as wet sandstone, which can strip the surface entirely. Done well, brushing is one of those small acts that quietly improves the crag for everyone who follows.

Chipping

This is the line you never cross. Chipping means altering the rock to create or improve holds, whether by drilling, gluing, breaking off features or filing edges to make a move possible. It is the cardinal sin of outdoor climbing, and for good reason.

A natural line is a finite thing. Once someone chips it, the original challenge is gone forever, and so is any chance for a future climber to do it as it was. It is vandalism dressed up as ambition, usually by someone unwilling to accept that a route might simply be too hard for them right now. The honest response to a move you cannot do is to get stronger, find different beta, or leave it for someone who can. Not to take a chisel to centuries-old stone.

Reinforcing a crumbling hold or cleaning loose rock for safety is a grey area handled by established locals and developers, not something to take on yourself on a popular established climb. As a visitor, the rule is absolute: never chip, never glue, never file. If a hold breaks naturally, that is part of the rock's life. If you deliberately change it, you have taken something that was not yours to take.

Why it matters

These habits are not gatekeeping for the sake of it. Crags get closed when landowners and communities decide climbers are not worth the bother, and damaged, defaced rock is exactly the kind of thing that tips that decision. Every brushed tick mark and every untouched hold is a small vote to keep access open.

The good news is that all of this is easy. Carry a brush. Tick lightly and clean up after yourself. Treat the rock as something you are borrowing rather than something you own. Logging your sessions and noting the conditions of the lines you climb is a nice way to stay aware of how the crag changes over time, and to do your bit to keep it in good shape for the people climbing it long after you.