Which region in Catalunya is known for its llicorella soils?

The Priorat DOC is renowned for its unique llicorella soils, which are composed of schist and clay. This specific soil type plays a crucial role in the cultivation of grapes, particularly the red varieties such as Garnacha and Cariñena, which flourish in these conditions. The llicorella soils retain heat and moisture, allowing for optimal grape ripening, which contributes to the intensity and complexity of the wines produced in the region. The combination of these soils, along with the region's rugged terrain and old-vine vineyards, results in wines that are often bold, rich, and structured, making Priorat a highly esteemed wine-producing area in Catalunya.

In contrast, while other regions like Penedes and Montsant have their own distinct terroirs and soil types, they do not share the specific llicorella soil signature that characterizes Priorat. The Catalunya DO encompasses a broader area and includes various sub-regions, but it is not specifically known for llicorella soils. Thus, the recognition of Priorat for its llicorella soils is what sets it apart in the context of this question.