abstract coal dark details grunge grungy heavy industrial lamp light loc locomotive metal old steam train transport transportation amunition army artillery attack bomb bombshel bullet danger explosion explosive military misfire missile rust rusty war weapon aircraft construction equipment construction vehicle Dirt equipment equipment hydraulics hammer heavy duty hydraulics machine machinery mobility movement power strength background black bones catacomb crypt dead death dismal evil halloween heavy metal human murder plastic scary skull spooky automobile blue cargo carpet delivery fuel green move moving red trailer transporter truck trucking vehicle vintage ancient architecture battlement big castles cloud clouds historic Huntingtower Perth prince roost summer turret vacation visitors wall Skull black bump floor friction hard industry iron mill plate sheet skid slide steel technology texture tool work