There are a lot more tunnels in DC than what is documented, as the Congressional tunnels are. There are historical stories of the bootlegging and slavery (read trafficking) tunnels which were dug by various individuals all over the city. I suspect that many of them parallel Connecticut Ave NW all the way up to the National Zoo and beyond through the neighborhood Comet Ping Pong is located in.
There are a lot more tunnels in DC than what is documented, as the Congressional tunnels are. There are historical stories of the bootlegging and slavery (read trafficking) tunnels which were dug by various individuals all over the city. I suspect that many of them parallel Connecticut Ave NW all the way up to the National Zoo and beyond through the neighborhood Comet Ping Pong is located in.