While side pulls, underclings, and gastons aren’t specific shapes of holds, they describe how holds are used based on their orientation. Almost every climbing hold has a side that is most advantageous, and depending on how that side is positioned, the hold may function as one of these types rather than its defined shape. Here’s how each of these techniques works:
Side Pulls
- What they are: Side pulls occur when a hold is oriented sideways, pointing away from the climber.
- How to use them: While the hold itself can still be gripped like any other, side pulls require the climber’s body to lean away from the hold. Instead of relying on gravity to generate downward force, you create horizontal force to stay connected. This technique often demands tension in your core and opposing pressure from your feet.
Gastons
- What they are: Gastons also involve sideways holds, but these are oriented toward the climber rather than away.
- How to use them: Gastons require an outward pushing motion, often using both hands in opposition. Picture pushing open a sliding glass door by placing your outward-facing hands in the gap and pressing apart. To use a single gaston effectively, you’ll often need to get your feet high and lean your body past the hold. Be cautious—your body will naturally try to twist away from the wall, so core tension is key.
Underclings
- What they are: Underclings are holds that face upside down, requiring an upward grip.
- How to use them: To grip an undercling, turn your palm upward and pull outward while pressing your feet into the wall for opposing force. Underclings can be tricky to use when the hold is below you but become much more manageable as you climb higher. They are especially useful for generating upward momentum or standing up when the hold is below your waist.
Volume
- What it is: Large, modular shapes attached to the wall to alter the route's dynamics. They can serve as a base for smaller holds or be used as climbing features themselves.
- Best for: Adding variety, complexity, or style to a route. They can significantly influence the difficulty and movement required.
- Shape/Style: Typically large and geometric, ranging from triangles and cubes to irregular forms, with surfaces that can be sloped, flat, or textured.
Traversing: Putting It All Together
Now that you understand side pulls, gastons, and underclings, practice using them to improve your technique. One of the best ways to build strength, endurance, and confidence is by traversing horizontally across the wall. Focus on using holds in new ways, especially those that challenge you. With time and practice, you’ll notice significant improvements in your climbing skills!