Apparently when medieval Lyon was reorganizing in the post Roman era, the streets paralleled the two rivers. Access to water was difficult, so the traboules were created. These were needed for both commercial purposes and in some instances to fetch drinking water.
The heart of Lyon is medieval, and while it is claimed that some of the oldest traboules go back to late Roman times I saw no evidence of structures that old. Perhaps they follow the same route.
|A typical traboule|
|staircases winding upward|
|The local limestone is full of fossils|
|They are generally found behind whopping great doors like this.|
|A shadowy woman of mystery in the traboules of Lyon|