are four mountain ranges in the province and the Abruzzo National Park straddles the border with Abruzzo. The highest peak in the province is Monte Mare, . The main rivers are the Volturno which flows into the Tyrrhenian and the Trigno which flows into the Adriatic. The lake of Castel San Vincenzo is a man-made reservoir built to power a hydroelectric scheme. The economy of the region has been traditionally based on agriculture. The holdings are mostly small and produce grapes, cereals, olives, vegetables, fruit and dairy products. Traditional products grown in the province include grass peas (Lathyrus sativus) and farro, which is made from a specialist form of wheat. Tintilia grapes are grown for the production of the region's red wine, the "Tintilia del Molise". References External links Official website Isernia