Aid climbing in the context of "Big wall climbing"

In mountaineering and climbing, a first ascent (abbreviated to FA in guide books), is the first successful documented climb to the top of a mountain peak or the top of a particular climbing route. Early 20th-century mountaineers and climbers were mainly focused on reaching the tops of notable mountain peaks (e.g. the eight-thousanders such as Mount Everest) and the tops of iconic climbing routes (e.g. the great north faces of the Alps such as the Eiger) by whatever means possible, and often using considerable amounts of aid climbing and/or with large expedition style support teams allowing them to "lay siege" to the climb.

As all the key tops were summited, the manner or "style" in which each top was reached became important to climbers, and particularly the ability to complete the ascent without the use of any artificial aids, which is called free climbing. In free-climbing, the term first free ascent (abbreviated FFA) denotes where a mountain or climbing route is ascended without any artificial aid — note that equipment for protection in the event of a fall can be used as long as they did not aid in the climber's upward progression. Completing the FFA of a climbing route is often called freeing (or more latterly sending) a route, and is highly coveted.

El Capitan (Spanish: El Capitán; lit. 'the Captain') is a vertical rock formation in Yosemite National Park, on the north side of Yosemite Valley, near its western end. The granite monolith is about 3,000 feet (914 m) from base to summit along its tallest face and is a world-famous location for big wall climbing, including the disciplines of aid climbing, free climbing, and more recently for free solo climbing.

The top of El Capitan can be reached by hiking out of Yosemite Valley on the trail next to Yosemite Falls, then proceeding west. For climbers, the challenge is to climb up the sheer granite face. There are many named climbing routes, all of them arduous, including Iron Hawk and Sea of Dreams.

A via ferrata (Italian for "iron path", plural vie ferrate or in English via ferratas) is a protected climbing route found in the Alps and certain other Alpine locations. The protection includes steel fixtures such as cables and railings to arrest the effect of any fall, which the climber can either hold onto or clip into using climbing protection. Some via ferratas can also include steel fixtures that provide aid in overcoming the obstacles encountered, including steel ladders and steel steps.

A climbing route (German: Kletterrouten) is a path by which a climber reaches the top of a mountain, a rock-face, or an ice-covered obstacle. Climbing routes are recorded in a climbing guidebooks and/or in online climbing-route databases. Details recorded include the type of climbing route (e.g. bouldering route, sport climbing route, traditional climbing route, ice climbing route, or alpine climbing route, etc.), the difficulty grade of the route–and the beta for its crux(es)–including any risk or commitment-grade, the length and number of pitches of the route, and the climbing equipment (e.g. climbing protection gear) that is needed to complete the route.

Definitions have been agreed on what determines a valid ascent of a route (e.g. the redpoint in rock climbing), and on the classes or styles of ascent (e.g. onsighted, flashed). The coveted first ascent (FA), first free ascent (FFA), and first female free ascent (FFFA), are chronicled for most routes. After a route is established, variations can be created (e.g. directessimas, sit starts, or enchainments), and climbers will try to improve on the style in which the route is climbed (e.g. minimizing aid climbing or removing other supports such as oxygen or fixed ropes). Some climbers will try to reduce or limit the in-situ climbing protection (e.g. greenpointing) or will try to completely free-solo the route. Others seek to set speed climbing records on routes.

Rock-climbing equipment varies with the specific type of climbing that is being undertaken by the climber(s). Bouldering needs the least equipment: climbing shoes, climbing chalk and optional crash pads. Sport climbing adds ropes, harnesses, belay devices, and quickdraws which clip into pre-drilled permanently-fixed bolts on the rock face. Traditional climbing adds the need to carry a "rack" of temporary and removable passive and active protection devices. Multi-pitch climbing, and the related big wall climbing, adds devices to assist in ascending and descending static fixed ropes. Finally, aid climbing uses unique equipment to give mechanical assistance to the climber in their upward movement (e.g. aiders).

Advances in rock-climbing equipment design and manufacture are a key part of the rock climbing history, starting with the climbing rope. Modern rock-climbing devices enable climbers to perform tasks that were previously done manually, but with greater control – in all conditions – and with less effort. Examples of such replacements include the harness (replaced tying the rope around the waist), the carabiner (replaced many knots), the descender/abseil device (replaced the dülfersitz), the ascender (replaced the prusik knot), the belay device (replaced the body belay), and nuts/hexes (replaced chockstones).