Which subregion of Chile is characterized by being almost completely surrounded by mountains?

The Maipo subregion is characterized by its geographical features, being almost completely surrounded by the Andes mountains to the east and the coastal range to the west. This unique positioning creates specific climatic conditions that significantly influence viticulture in the area. The mountains offer natural protection from weather extremes, while also contributing to the drainage of cold air, allowing for a more consistent climate ideal for grape growing.

Maipo is particularly renowned for its production of high-quality red wines, especially Cabernet Sauvignon, which thrive in its well-drained, fertile soils. The elevation of vineyards in the region can vary, with many located at high altitudes that are influenced by the cooler temperatures at higher elevations, which promotes acidity and enhances the flavor profiles of the wine.

In contrast, other subregions like Elqui and Coquimbo have more varied geographic characteristics and are not as enclosed by mountain ranges. Although Cachapoal does have some mountainous elements, it is not as predominantly surrounded as Maipo. Understanding these geographical distinctions helps to appreciate the unique terroir that contributes to the profiles of wines produced in each subregion.