background fit idea jigsaw match missing parts piece playing puzzle soluton structure symbol teamwork texture together active adults alongside backpacks bicycles bikes crash-helmets cycle cycling cyclists energetic energy environmentally-friendly exercise fitness helmet helmets movement moving on-the-move outdoors outing path pathway pedal-power pedalling pedals pushbikes recreation safety safety-helmets shade shadows sport sporty sunlight sunshine track transport transportation travel travelling trees wheels youth appearance barrier coloring colors colouring colours constructed fitted fitting historic large limestone local-stone mortar old patchwork perspectives random randomly-coursed rock rocks rough rugged rural secure security shaped shapes sharp solid stone stone-walled stones stonework strength strong surface surfaces textures uneven variations variety wall black boy cutout isolated jog jogging man run runing runner running shadow silhouette white bright bulb case CFL diffused light housing illumination lamp light light fitting Light Fixture lighting luminous antique board brick brown damaged door handle doors palace plaster Poland wall fittings wood