Which of the following wine regions is NOT part of the southern Rhone?

Côte Rôtie is indeed not part of the southern Rhône, as it is located in the northern Rhône region. The northern Rhône is known for its steep, terraced vineyards and focuses on cool-climate varietals, particularly Syrah and Viognier. This region produces distinct styles of wine that reflect its unique terroir, quite different from the warmer climate and grape varieties typically found in the southern Rhône.

Châteauneuf-du-Pape, Vacqueyras, and Gigondas are all located within the southern Rhône and are well-known for their rich, full-bodied blends, primarily consisting of Grenache, Syrah, and Mourvèdre, among other varietals. Each of these regions contributes to the diverse and robust character of southern Rhône wines, showcasing the warmth and complexity of the region's terroir.