Abstract: A marking apparatus for climbing holds comprising an element shaped as a climbing hold adapted to be set on a climbing wall or an element to be integrated into a climbing hold, a casing comprising a light coupled to an electric power supply and a remote control operated switch permitting to turn on or off the light while the box is coupled to the element set onto the climbing wall. The apparatus comprises a unique identifier coupled to a climbing holds apparatus permitting to differentiate the holds among a variety of holds and by the fact that the switch is adapted to be triggered by a remote control and to accept triggering orders coming only from the remote control corresponding to the identifier. A climbing wall system made of a variety of climbing holds as aforementioned and a controller comprising a man-machine interface and a remote control operated holds apparatus.