Angled close-up looking up at the underside of an overhead crane or gantry system. The structure features bold yellow-painted steel beams and cross-braces with rivets, a pair of large dark toothed spur gears mounted on a shaft, and multiple heavy-duty steel chains hanging downward from a pulley assembly. Teal/dark green painted rails are visible in the background, with diffused natural light coming through behind the structure.