1.1 is a perspective view of a climbing device, showing my new design; 1.2 is a side view thereof, the opposite side being a mirror image; 1.3 is a top view thereof; 1.4 is a front view thereof; 1.5 is another perspective view thereof; 1.6 is another perspective view thereof; 1.7 is another perspective view thereof; 2.1 is a perspective view of another embodiment thereof; 2.2 is a front view thereof; 2.3 is a top view thereof; and 2.4 is another perspective view thereof.