The Dordogne valley produces more walnuts than any other region in France. Walnut trees are everywhere and it is quite disheartening to drive down the road in the autumn and hear the sound of the fallen nuts as they are crushed by your tires. Such a waste. Commercially, they grow 4 varieties of walnuts in the Dordogne region and we always look forward to loading up with a few bags of shelled nuts and a few tins of walnut oil on each trip.