This terroir lies close to Le Castellet village on the top of the hillside (170 meters altitude). The rather homogeneous clay and chalk terroir lies on 100-million year old Santonien.
There the Mourvèdre grape expresses itself fully. It gives tannin, fruity and powerful wines. It contains 70-80% of the Mourvèdre grape depending on the year. La Tourtine site is often swept by the Mistral wind and is particularly well exposed to the sun.
Thus it produces a great wine that ages well even after 10 or 15 years and keeps its red berry and spice aromas.