It is on the left of the path, a little hidden. The Steinbaechlein, an artificial river that once fed mills and is now home to beavers, made a major contribution to the development of the Mulhouse textile industry, thanks to its crystal-clear water, which was diverted from the Doller at the Pont d'Aspach. Behind the Steinbaechlein, the former Hofer factory (artificial silk) has been demolished and replaced by a housing estate.