Le mur de Granchamp, long de 200 m environ, possède un beau parement réticulé et porte le canal de l’aqueduc à la sortie de la commune de Soucieu-en-Jarrest.
After this the channel goes underground but then emerges again on a wall followed by a series of arches, the last of which is known as “Le Chameau” (the camel) due to its shape.
A bit farther, another series of arches ends at the collecting reservoir, known as “La Gerle” (the basin) which is the point of depart of the Garon siphon.