The lock allows to link two reaches of different levels (upstream and downstream). The lock of Quiheix located on the commune of Nort-sur-Erdre is the first lock that you will cross during a stay by boat.
A remarkable viewpoint on the Erdre valley, the towpath is accessible to all hikers. Find the interpretation panel "On one side the Erdre and Nantes, on the other the canal from Nantes to Redon"
From the lock of Quiheix to the lock of Tindière : 4,5 km