activities artificial artificial structure ascend ascending belayer belaying boy climb climber climbing climbing harness climbing rope climbing technique climbing wall descend descending equipment give helmet indoor sport outdoor sport portable wall rock climbing shoes safety safety harness shaped climbing holds sport structure surface take Tension youth abstract architectural background barrier basic coloring colors colouring colours constructed exterior external firm fitted large light lines patchwork perspectives rock-wall rocks rough rugged secure security shaped shapes solid stone stones stonework strength strong style sunlight sunshine surfaces texture textures uneven variations various wall wallpaper well-built backdrop brown close-up closeup color decoration detail grunge grungy hard macro material Mineral natural nature old pattern pebble rock rubble tile appearance canyon colored coloured contours contrast contrasts cracks fissures flaws gorge layered layers levels ravine rock-face rockface rocky shade shadows shape small-canyon steep strata stratum sunny textured walls 3D asbestos blue cement concrete construction dark decay design grainy graphic gray grey plaster scrapbooking stucco urban weathered coarse colourful decorative green metallic orange purple red