abstract appearance background brown colored coloring colors coloured colouring colours contours contrast contrasts cracks fissures flaws layers levels light lines natural ribbons rock rock-face rockface rough rugged shade shades of color shades of colour stone strata stratum surface surfaces texture textured textures veins wallpaper austere bare bleak canada cliff cold dangerous difficult environment extreme face forbidding freezing frozen glacier harsh high ice icy mountain mountainside nature Rockies Rocky Mountains severe silt snow stern conglomerate heap heaped layered pile piled rocky shadows shape shaped shapes sunlight sunny sunshine cracked black hard pitted white angles backdrop backgrounds barrier blocks constructed fitted large limestone linear mortar perspective perspectives secure security solid stones stonework strength strong variations variety wall walled well-built deteriorating weathered weathering