You are walking down the street and you step on a manhole cover and you do not think about it. You do not think about the iron under your feet. You do not think about the city underneath you. You are walking on top of a world. Underneath that manhole cover there are pipes and wires and tunnels and rats and steam and the entire infrastructure of a city that does not want you to know how it works. The manhole cover is the lid on the city's secrets. You walk on it every day and you never look down.

You know what a manhole cover sounds like when a truck drives over it. That clang. That hollow iron bell. That is the percussion of New York. No drummer has ever made that sound in a studio. That sound only exists on the street. You hear it at three in the morning when a delivery truck hits the cover on Avenue A and the whole block wakes up for one second and then goes back to sleep. The manhole cover is the alarm clock nobody asked for. The manhole cover is the drum solo the city plays for itself.

You have seen the steam coming out of the manhole cover. That steam is the city breathing. The city exhales through those holes in the street and the steam rises up through the yellow light and it looks like a movie but it is not a movie. It is just a city trying not to explode. Underneath the manhole cover the temperature is a hundred and fifty degrees. Underneath the manhole cover the pipes are screaming. The manhole cover is the only thing between you and the city's fever. Two hundred and fifty pounds of iron keeping the street from becoming a volcano.

You ever see a manhole cover that is not round. You have not. Because a round cover cannot fall into its own hole. A square cover can. A triangle cover can. The round manhole cover is the most perfectly designed object in New York City. It was designed by an engineer who understood one thing. The thing you are standing on should not be able to kill you. That is the entire philosophy of the manhole cover. Stay up. Keep the people up. Keep the secrets down.

You walk past a manhole cover with writing on it. It says the year it was made. Some of them say eighteen ninety. You are walking on iron that was poured when your great-grandmother was alive. You are stepping on history and you do not even break your stride. The manhole cover does not ask for credit. The manhole cover does not ask for a plaque. The manhole cover just holds the weight and takes the weather and lets you walk over it without a word. That is the most New York thing in New York. Doing the work. Taking no credit. Holding everything up and never complaining.