background electricity energy engineer engineering equipment excavator foundation gear hard hardness infrastructure iron landscape maintenance master metal panoramic power texture processing progress rubble strong structure tough winch work worker working afternoon air blue building cloud clouds fly flying freedom peace postal sky tourism travel trip voyage white anticipating base blocks brick cement city construction gray hole holes material pattern patterns roof square street structures asphalt black bottling brasilia brazil bridge car express pavement return road saw shortcut speed stretch track traffic viaduct beam column pillar sand scene strength works