Playing with flashlights in a local drain… in the rain.
T3h 5p1d0rz! Might not look like it, but these things are alive.
The drains of Rochester were built in 1888-1890 by Emil Küchling, later to become the first professor of mechanical engineering at the University of Rochester. His developments in rational scatology included enclosed brick sewers like this one, which has been abandoned since 1974. However, you can still hear the roar of torrents of excrement a few feet away in the side tunnels. Until you think about what is flowing, it looks and sounds like a peaceful, wild waterfall!
It can’t be unseen…
A few more here