Directed by Caroline Bacle • Documentary • 2012 • 72 minutes

Nearly every major city was built near the convergence of many rivers. As cities grew with the Industrial Revolution, these rivers became conduits for disease and pollution. The 19th-century solution was to bury them underground and merge them with the sewer systems. These rivers still run through today's metropolises, but they do so out of sight.

LOST RIVERS examines hidden waterways in cities around the world and introduces us to people dedicated to exploring and exposing them. In Montreal, urban explorer Danielle Plamondon and photographer Andrew Emond follow the stony underground tunnels that contain the Riviere Saint-Pierre. In Bresica, Italy, a group of urban explorers conduct popular, officially-sanctioned tours through the city's network of medieval rivers.

As climate changes forces us to reconsider the relationship between the built environment and our natural resources, LOST RIVERS brings to life an aspect of urban ecology that has long been kept secret.

"Important as well as inspiring."—Science Magazine