It flows past Yenne (left) and beneath the picturesque fortress (formerly a Carthusian monastery) of Pierre Chatel (right) before it attains the foot of the extreme southern spur of the Jura, at a height of 696 ft., not far from the village of Cordon, and just where the Guiers flows in (left) from the mountains of the Grande Chartreuse.
Above the sea, in the heart of a group of limestone mountains, and not far from the source of the Guiers Mort.
W., and watered by a tiny tributary of the Guiers Mort.
The principal approach to the convent is from St Laurent du Pont, a village situated on the Guiers Mort, and largely built by the monks - it is connected by steam tramways with Voiron (for Grenoble) and St Beron (for Chambery).
The road mounts along the Guiers Mort and soon reaches the hamlet of Fourvoirie, so called from forata via, as about 1510 the road was first pierced hence towards the convent.
Some way farther the Guiers Mort is crossed by the modern bridge of St Bruno, the older bridge of Parant being still visible higher up the stream.
After passing through four tunnels the road bends north (leaving the Guiers Mort which flows past St Pierre de Chartreuse), and the valley soon opens to form the upland hollow in which are the buildings of the convent.