abstract background black bumps caution coloured design equipment floor grunge health no non non-skid non-slip object occupational outdoor outside pad pads path pathway pattern pavers paving plastic prevent prevention rubber safety shape shiny sidewalk skid slip slipping stone street surface texture traction used walkway appearance backdrop barrier chips close-up concrete construction contrast contrasting dark deliberate designed disaplayed display embedded gray grey heavy mottled near patterns protective rough secure shaped shapes size Sizes slab slabs smooth solid stones strength strong surfaces textured textures thick wall angled angles blocks bricks colored coloring colors colouring colours Designs detailed detailing distinctive fit fitted fitting footpath grooves ground interlock interlocked interlocking level light patterned pavement paving-bricks stonework wallpaper ancient Angkor Angkor-Wat archaeological archaeology buddhism Buddhist cambodia craftsmanship cultural culture damp decorative features height heritage high Hindu Hinduism historical history jungle lichen mixture monument mosses old ornamental perspectives sculpted sculpture style temple-complex temples weathered