appearance confined display displayed driving-force energy engines equipment force heavy heavy-duty historical history locked locomotives machinery machines mobility pistons power powerful rails railway railway-yard restoration restoration-yard restored steam-engines steam-locomotives steam-trains strength trains transportation wheels abstract background black blended bright brilliant circles circular color colored colour coloured decorative design details interconnected interwoven kaleidoscopic light lines mandala patterns perspectives petals pointed points round shape shaped shapes sharp style texture textured textures thick thin tiles vibrant wallpaper abundance accessory bundle collection coloration colorful coloring colors colourful colouring colours cultural culture decoration down feather feathers fine fluff fluffy orange ornament ornamental ornamentation ornaments Sizes tradition traditional value valued variations variety bubble bubbles bubbly contrasting designed distinctive interlinked liquid liquidy melting merge merged merging modern molten multicolored multicoloured patterned presentation surface surfaced surfaces surfacing backgrounds bare bumps close-up cracks edge edges grain hard-wood layers lumber ridges rough shades-of-colour smooth timber tree tree-trunk trunk uneven varieties wood wood-grain blue geometric geometrical linear lined straight striped stripes