Public domain photos

The image shows a large green machine inside of a building, with a staircase leading up to it. There are metal poles, pipes, and lights on the ceiling, as well as a board with text on it. The machine appears to be a boiler, with various components and tools scattered around it.

The image shows a large green machine inside of a building, with a staircase leading up to it. There are metal poles, pipes, and lights on the ceiling, as well as a board with text on it. The machine appears to be a boiler, with various components and tools scattered around it.Open in library