The rock engravings are difficult to see and nowhere near as stunning as those of Alta (Norway) or Tanum (Sweden).
However having reached Pocinho by train, it was only a short ride by minibus to Vila Nova de Foz Coa. Here I visited the Archaeology Park office and manged to arrange a visit to the Penascosa site. This involved taking the same minibus to Castelo Melhor, a village about 10 km away. From the reception centre in the village I joined a guided tour (costing 7 euros) by 4WD down into the valley to see a number of the engravings.