This is a stone wayside or field cross, also called a calvary in France.
You often see them in rural areas, at road intersections, or along ancient pilgrimage routes. They usually have a religious function (Catholic), commemorating an event, as a place of prayer, or as a memorial to the deceased.
The plinth often has an inscription with information about who had the cross placed there and why.
There is also a wooden bench where you can take a break and rest.