005. Southern Manche. The deanery of Genêts. The parishes of Angey, Sartilly, Saint-Jean-le-Thomas, Dragey and Genêts were part of the deanery of Genêts and the archidiachoné of Avranches, like the priory of Saint-Léonard-de-Vains. The archidiachoné of Avranches included three other deaneries: the deanery of Avranches, the deanery of Tirepied (that included the parish of Saint-Loup) and the deanery of the Chrétienté (Christendom). The deanery of the Chrétienté included nine parishes around the episcopal town of Avranches, including the parish of Saint-Quentin-sur-le-Homme. Map by Marie Lebert. [Illustration] 006. Southern Manche. The medieval roads going to Mont Saint-Michel. This region was crossed by several roads used by pilgrims to reach Mont Saint-Michel. At the north of Avranches, we had from west to east the shore road coming from Saint-Pair-sur-Mer, the road coming from Saint-Pair-sur-Mer (with a different route), the road coming from Coutances, the road coming from Saint-Lô, and the road coming from Caen. At the south of Avranches, a medieval road was used by the pilgrims coming from Tinchebray, Condé-sur-Noireau, Falaise or Lisieux to reach Mont Saint-Michel. Map by Marie Lebert. [Illustration] 007. Southern Manche. Geological map. All these churches were built in granite and schist, which were the local stones. Sedimentary grounds formed by schist rocks surround two large granite grounds, those of Vire and Avranches. Laying down from east to west, the granite ground of Vire is around five kilometers large, and ends on the west with the cliffs of Carolles and Champeaux. Laying down from west to east, the granite ground of Avranches is narrower, and only from two to four kilometers large. These granite grounds are both surrounded by a metamorphic ring formed with schist rocks and grauwack (a kind of schist) rocks. The ground of Saint-Pair is a flysch (detritic ground) formed with grauwack rocks, siltit rocks et black argilit rocks with some schist inside. The ground of Granville is a flysch formed with grauwack rocks alternating with schist rocks. Map by Marie Lebert. [Illustration] 008. Saint-Martin-le-Vieux. Location. The village of Saint-Martin-le-Vieux is located between Bréhal and the sea, near the haven of the Venlée, 2 kilometers west of Bréhal and 9 kilometers north of Granville. The village was situated on the medieval road coming from Cherbourg and going to Saint-Pair-sur-Mer to reach Mont Saint-Michel, the final destination for many pilgrims. [Illustration]