abstract appearance background close-up colored coloring colors coloured colouring colours conglomerate contrast crack fissure flaws granite grit gritty layered layers levels light lines mica natural rock rock-face rockface rocky rough rugged shade shadows shape shapes silicate stone strata stratum sunlight sunny sunshine surface surfaces texture textured textures wallpaper brown contours contrasts cracks fissures veins breaking-through cracked quartz ribbons shades of color shades of colour canyon gorge ravine rocks small-canyon steep stones walls Australia blocks bush clearing dried-leaves edges geological grass greenery ground heavy large shaped shrubbery solid split strength variations vegetation red reddish-brown sandstone sandy