Captieux is a commune of Southwestern France, located in the Gironde department, Nouvelle-Aquitaine (before 2015: Aquitaine). It lies near the border with the Landes and the Lot-et-Garonne departments. The commune is in the east of the Parc naturel régional des Landes de Gascogne. Between 1950 and 1967, the U.S. Army's 23,000-acre 571st Ordnance Ammunition Command (Captieux Ordnance Depot) was situated southwest of the village. The Itinéraire à Grand Gabarit, a route which has been modified to allow its use by the oversize road convoys conveying body sections and wings of the Airbus A380 airliner, bypasses Captieux using a specially created private track about 1 km to the east of the village.

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