Abstract: An extractable fold-down climbing aid for reaching an operator's cab or for climbing onto the walking deck of an undercarriage of a mobile device, for example a mobile crane, includes a stepladder, a holding mechanism in which the stepladder is held for transportation purposes and out of which the stepladder can be moved for use as a climbing aid, a guide for at least one end of the stepladder, which guide is formed by the holding mechanism or is connected to the holding mechanism. The guide and one end of the stepladder together form a joint in which the stepladder can be pivoted relative to the mobile device, and the stepladder is a telescoping stepladder with at least an inner and an outer slide-out element, and the holding mechanism is connected or can be connected to the mobile device.