Why slab climbing is harder than it looks (and why that's the point)

There is a particular kind of silence that settles over the Brook Crest Path gym floor when someone steps onto the 85-degree slab for the first time. Not the silence of boredom — the silence of a climber realising that every instinct they have developed on overhangs is now working against them. The slab sits at the back of the main hall, modest and beige, set back just past vertical enough to make you want to lean into the wall. Doing so, it turns out, is exactly the wrong move. This piece is an attempt to explain why that wall is one of the most genuinely instructive surfaces in the building, and why the humiliation it hands out is worth every second of it.

What 85 degrees actually means in practice ¶

A perfectly vertical wall is 90 degrees from the floor. An overhang — the dramatic, arm-punishing terrain most gym climbers chase — tips past 90 toward horizontal. Slab goes the other direction: below 90 degrees, angling back toward the ground. At 85 degrees, the wall leans away from the climber by only five degrees. That sounds trivial. In practice, it shifts the entire centre-of-gravity calculation. On an overhang, gravity pulls a climber off the wall and the arms do the work of staying on. On slab, gravity pulls a climber into the wall, but at an angle that constantly threatens to slide the feet off the holds. The body has to stay out, away from the surface, hips forward — a posture that feels deeply wrong to anyone whose muscle memory was built on juggy overhangs.

Why experienced climbers struggle more than beginners ¶

A climber who has spent two years on steep terrain at a gym like Brook Crest Path arrives at the slab with a set of learned reflexes: pull hard, keep the chest close to the wall, trust the hands. On slab, each of those reflexes punishes rather than rewards. Pulling with the arms on a near-vertical surface drives the feet off the rock. Keeping the chest close collapses the body angle and removes friction from the shoe sole. The hands on most slab routes are almost incidental — small crimps or open-hand pinches that offer directional guidance rather than load-bearing purchase. A raw beginner, having no ingrained habits, sometimes finds the movement more intuitive precisely because they haven't yet learned to over-rely on upper-body strength.

The footwork lesson the slab forces on every climber ¶

At Brook Crest Path the slab is set with holds that range from decent-sized footholds down to features that are, functionally, texture on the wall. Climbing coach Maris Ellwood, who runs the Thursday evening technique sessions at the gym, describes the exercise she uses: she asks climbers to place their foot on a hold and then deliberately look away before weighting it. The point is not mysticism — it is muscle memory. A climber who has to watch their foot every time they move it onto a slab feature has not yet internalised the geometry of their own shoe sole. The drill forces a proprioceptive reckoning. After six weeks of Thursday sessions, most participants report that their footwork on overhangs improves measurably as a side effect.

Friction as a discipline, not a given ¶

Modern climbing shoes are engineered to deliver serious friction on low-angle terrain. Brands like La Sportiva and Scarpa design slab-specific lasts — flatter, stiffer, with a broader smearing platform — because the physics demand it. But the shoe is only as effective as the angle at which it is presented to the surface. A climber who stands on the inside edge of their shoe on slab, as they might on a vertical face, reduces the contact patch dramatically. The smear — weighting the full front third of the sole flat against the wall — is the fundamental slab technique and it is also the one that feels the most neurologically alarming. The body interprets it as stepping off a ledge. Learning to override that interpretation is less about courage than about repetition logged at low consequence: a gym slab, at modest height, is precisely the right environment to accumulate those reps.

What the 85-degree wall reveals about trust ¶

The word that comes up most often among Brook Crest Path members who talk about the slab is not strength or technique — it is trust. Trust in the rubber. Trust in a foot placement that the hands cannot verify by pulling against. The slab strips away the reassurance of a solid handhold and asks the climber to commit to a foot that may or may not hold. That is, when it works, a precise and transferable skill. Outdoor slab climbing on granite — think the lower slabs at Stanage Edge in the Peak District, or the friction pitches on certain routes at Rodellar — demands this quality constantly. The gym slab is not a simulation of that experience so much as a preparation for the psychological architecture it requires.

How Brook Crest Path routes the slab into beginner programmes ¶

The gym's introductory programme, a six-session course run by lead instructor Jonah Pretner, dedicates the entirety of session three to the slab wall. Pretner's reasoning is deliberate: introducing slab before climbers have fully committed to strength-led movement means the habits form in parallel rather than in sequence. Beginners work traverses at low height, moving laterally across the slab without topping out, which removes any summit-oriented anxiety and keeps attention on the feet. By the end of session three, most participants can identify the difference between an edging placement and a smear without being told, because they have felt the consequence of choosing wrong. That embodied knowledge, Pretner argues, is more durable than any amount of verbal instruction about body position.

The longer argument for keeping slab in the gym ¶

There is a commercial logic in climbing gyms that tends to favour dramatic, photogenic terrain: steep walls, large volumes, dynamic movement that looks good filmed from the side. Slab is none of those things. It is quiet, incremental, and rewards internal attention over external spectacle. Several gyms that opened in the mid-2010s dropped slab almost entirely from their floor plans in favour of maximising overhang square footage. The argument for keeping it — for building it into a facility the way Brook Crest Path has, with dedicated space and dedicated programming — is that it produces more complete climbers. The 85-degree wall is not the most used surface in the gym on any given Saturday afternoon. But the climbers who return to it regularly, who treat it as a practice rather than a problem to be solved once and abandoned, tend to be the ones whose movement quality on every other surface in the building improves most consistently over time.

The slab does not reward effort in the way a hard overhang does. There is no pump, no dramatic throw, no moment of obvious physical conquest. What it offers instead is a more precise kind of feedback: the foot either holds or it doesn't, and the reason it doesn't is always knowable. Brook Crest Path keeps it in the gym for exactly that reason. Some of the most useful surfaces are also the most unglamorous ones.