An interview with Michael Cook, who explores municipal drain systems and other subterranean infrastructure.

Even people I know who self-identify as urban explorers aren’t at all that interested in undergrounding – especially not in storm drains. A lot of them just don’t see the actual interest. It’s not a detail-rich environment. You can walk six kilometers underground through nearly featureless pipe---and there’s not something to see and photograph every five feet.

Cook has plenty of wonderful photographs and logs of his trips at Vanishing Point.