Potenza - Parks and nature reserves Riserva Regionale del Pantano di Pignola The Pantano di Pignola Regional Reserve is considered a protected area since 1984. The area has an area of 155 hectares, surrounded by peaks that reach 1000 meters in height. The vegetation is characterized by trees with a hygrophilous matrix and the plunge, which is a symbol of the Oasis. The reserve is open all year round.