Explore details about location Impasse du Grand Pillon. Impasse du Grand Pillon is a location situated within the Mont-de-Marsan alongside other areas such as Place des Arènes, Passerelle des Douves, Rue du Huit Mai 1945. Additionally, some smaller parts of Impasse du Grand Pillon include specific areas like Avenue de Ribeng, Avenue de Sabres, Allée Django Reinhard adding to the diversity of its landscape.