La Vallée-de-l'Or Regional County Municipality  La Vallée-de-l'Or "(The Golden Valley)" is a regional county municipality in the Abitibi-Témiscamingue region in northwestern Quebec, Canada. The seat is in Val-d'Or. It is named for its gold deposits in the Harricana River and Bell River valleys. Before October 11, 2003, it was known simply as Vallée-de-l'Or Regional County Municipality. There are 10 subdivisions within the RCM:    Highways and numbered routes that run through the municipality, including external routes that start or finish at the county border: