For a moment, I wondered if this was fiction or a real life story. In the end, it doesn't really matter as it's interesting enough a read. I never thought of people making manhole covers. In fact, we have a different kind of system in Holland. More like a roster / grid, usually on the side of the pavement, that drains the (rain)water. I'm not sure if we have a lot of manholes.

I'm looking forward to reading part 2 and 3.

Have a great day!