It is one of the most prestigious appellations in France. The total surface of the appellation (130 ha) was delimited in 1937 by judgement and cannot be extended. From a pedological point of view, the vineyard shows an exceptional diversity of soils. Originally, the hill of Tain is a block of porphyroid granite detached from the Massif Central. It can be divided into three parts: the original Tournon granite formation on the west side, which includes the Bessards and La Chapelle districts; loess soils found more on the upper part of the hill; and finally various formations from the river terraces of the Rhône. In all cases, a red Hermitage is a wine for long ageing, with more spice and structure if it comes from a granitic matrix, or more fruit and sweetness if it comes from the other types of soil. In white wines, if the vinification and maturation have not worn out the raw material, one can appreciate in time opulent but fine, gastronomic wines!