The video shows a man operating a large piece of machinery in a dark tunnel. The man is wearing a bright orange jumpsuit and a hard hat for safety. The machinery appears to be a large drill or excavator, and it is equipped with bright lights to illuminate the area. The man is focused on his work, and the machinery is moving slowly and deliberately. The tunnel walls are rocky and uneven, and there are visible markings on the walls. The lighting in the tunnel is dim, but the machinery's lights provide enough visibility for the operator to see what he is doing.