The Grand-Puy plateau rises to the west of the village of Pauillac, twenty metres above sea level. There one finds a gravelly soil of alluvial pebbles renowned for ensuring excellent water drainage. These alluvial pebbles, two million years old, are geological witnesses of the Quaternary era. This particular soil stores solar heat during the day and releases it to the vine at night, creating ideal conditions for the ripening of Cabernet Sauvignon.