From the winery: "The vineyards at Vesuvio are remarkable in part as a result of the steepness and variability of the terrain. The old vineyards were concentrated on only 105 hectares, less than a third of the total property. Quinta do Vesuvio is one of the only Douro quintas to be privileged with vineyards over 25 years old that were planted by variety (most old vineyards are a mix of grape varieties planted side by side). The principal grape varieties are Touriga Franca, Tinta Roriz, Tinta Barroca and Touriga Nacional. The average age of the vines ranges from 10 years for the new plantings to 35 years for the old plantings, all of which are 'A' rated vineyards – the best."