Key takeaways
- A volume is a large 3D bolt-on shape that adds features and angles to gym walls.
- You climb on its faces and edges (often smearing and balancing) and on holds bolted to it.
- Volumes turn flat walls into varied, three-dimensional, rock-like terrain.
- They're a staple of modern route setting, demanding balance and body positioning.
What a volume is
A volume is a large, hollow, three-dimensional shape — often geometric, like a pyramid or wedge — that bolts onto a climbing gym wall to add features, angles, and 3D terrain. Unlike small holds, volumes are large protrusions you climb on directly, and smaller holds are often bolted onto them.
How you climb on them
You use the volume’s faces, edges, and corners as holds and footholds — often smearing your feet on the sloping surfaces, palming with your hands, and relying on balance and body position rather than positive grips. A route may combine using the volume’s shape with regular holds screwed onto it.
A route sends a climber up and over a big pyramidal volume — there are no positive holds on it, so they smear their feet on its angled faces, palm the edges, and use balance and body tension to rock over the top, as if climbing a featureless boulder.
Why gyms use them
Volumes transform flat walls into varied, three-dimensional, rock-like terrain, letting route setters create more interesting, creative, and realistic movement — adding angles and sloper-like surfaces that change how a wall climbs. They’re a staple of modern indoor route setting and competition walls.
The bottom line
A volume is a large, three-dimensional bolt-on shape that adds features, angles, and rock-like terrain to climbing gym walls — climbed on directly via its faces and edges (lots of smearing and balance) and often studded with smaller holds. A staple of modern route setting, volumes turn flat walls into creative, varied terrain that rewards body positioning over brute grip.
Frequently asked questions
What is a volume in climbing?
A volume is a large, hollow, three-dimensional shape — often geometric, like a pyramid, wedge, or curved form — that bolts onto a climbing gym wall to add features, angles, and 3D terrain. Unlike small holds, volumes create large protrusions you climb on directly and onto which smaller holds are often bolted.
How do you climb on volumes?
You use the volume's flat faces, edges, and corners as holds and footholds — often by smearing your feet on the sloping surfaces, palming or pressing with your hands, and relying on balance and body position rather than positive grips. Volumes frequently have regular holds screwed onto them too, so a route might combine using the volume's shape with holds on its surface.
Why do gyms use volumes?
Volumes transform flat, uniform gym walls into more varied, three-dimensional, rock-like terrain, letting route setters create more interesting, creative, and realistic movement. They add angles, slopers, and features that change how a wall climbs, and they keep routes fresh and engaging. They've become a staple of modern indoor route setting and competition walls.
Sources
- Route setting & gym climbing — American Alpine Club
- Climbing fundamentals — UIAA