I wonder what it was? Or is? I wonder if the people who made it enjoyed their jobs? If the workers who installed it had a sense of pride, and a job well done, after putting it in? Probably. Most people take at least some sense of pride in their work.
This sort of thing makes me sad. Whatever this once was once built, tested, and carefully installed. Now it sits neglected in a mossy corner, presumably either damaged or degraded to the point of needing extra waterproofing.