Pais-Serra, Relazione dell' inchiesta sulle condizioni economiche della Sardegna (Rome, 1896); G.
Monchiquite (Ria do Ouro, Serra de Tingua).
Ranges of these chapadas form the boundary lines with three states - the Serras dos Irmaos and Vermelha with Piauhy, the Serra do Araripe with Ceara., and the Serra dos Cariris Velhos with Parahyba.
The largest of the coastal rivers are the Goyanna, which is formed by the confluence of the Tracunhaem and Capibaribe-mirim, and drains a rich agricultural region in the north-east part of the state; the Capibaribe, which has its source in the Serra de Jacarara and flows eastward to the Atlantic at Recife with a course of nearly 300 m.; the Ipojuca, which rises in the Serra de Aldeia Velha and reaches the coast south of Recife; the Serinhaen and the Una.
The general elevation of the plateau is estimated to be about 2700 ft., and the highest elevation was reported in 1892 to be the Serra dos Pyreneos (5250 ft.).