abstract ancient backdrop background cliff color colour copy copyspace dressed erode eroded erosion face fossil geological geology grain grainy grit gritty grunge grungy limestone mason masonry material orange outcrop oxide patina pattern rock rockface rough rusty sand sandstone sandy sediment sedimentary space stone texture textured wallpaper weathered caves coastal coastal-landforms coastline cracks crannies formations grained holes hollows landscape layers levels rocks rocky seashore seaside sedimentary-rock shade shadows shapes sharp shore Sizes sky solid stones strength strong surfaces surfacing textures uneven variations variety vegetation blue coast ocean sea sunlight sunshine wave Asia colored colors coloured colours distance distant expanse foliage growing growth Hong-Kong-islands Hong-Kong-waters islands natural plants rock formations shoreline stony water waterline beach Hong Kong islands Hong Kong waters national marine park bay blue-waters currents foreground foreshore light perspectives point promontory rock-formations shorelines shores sound tides trees