Galets roulés are components of the terrain, or terroir, and a distinguishing feature of many of the vineyards in the Côtes du Rhône AOC and more specifically Châteauneuf-du-Pape AOC and other top wine producing areas in the regions such as Gigondas_AOC and Vacqueyras_AOC. They are often larger, rounded stones that have been smoothed by both glacial and fluvial actions over time and deposited in the region by the Rhone river.