Figure 4.
The image depicts a worker dressed in bright orange safety attire and a hard hat, standing next to a large yellow machinery crane that is lifting several adjacent, curved sections, likely parts of a tunnel or underground infrastructure. These sections are stacked and positioned along a rail track within a high, expansive construction site, which has a concrete wall behind. The space is illuminated by bright lights reflecting off the surfaces, enhancing the industrial atmosphere. In the background, there are additional construction materials and machinery visible, including pipes running along the wall. The setting clearly suggests an active construction or assembly environment focused on large-scale projects.Pit bottom working platform installed above conveyor systems below