Abstract: A ladder cage comprises a plurality of spaced rings, having fasteners attached thereto. A plurality of vertical braces are each attached to respective ones of the fasteners, the vertical braces each having a mounting hole proximate each end, and extending between two of the plurality of rings. Each of the fasteners comprises a mounting pin having a slot therein, and a drop pin slidably mounted to that fastener for sliding in and out of its slot. An associated vertical brace is fastened to a ring by each fastener, as the fastener's mounting pin is received in the mounting hole of the associated vertical brace, and the drop pin of the fastener is received in the slot of said mounting pin, such that the drop-pin makes an angle of between about 30° and 60° to the vertical.