CASTELLON DE LA PLANA, a province of eastern Spain, formed in 1833 of districts formerly included in Valencia; bounded on the north by Teruel and Tarragona, east by the Medi terranean sea, south by Valencia, and west by Teruel. Pop. (1930) 308,746; area, 2,495sq.m. The province is mainly occupied by mountains which increase in height westward and culminate in the peak called Penagolosa (5,945ft.). Lowlands occur only along a narrow coastal belt and up some of the river valleys. The interior is dissected by the valleys of many streams flowing to the Medi terranean. The chief rivers are the Cenia, the Vinaroz and the Mijares with its tributary the Monlleo, separated from the Palan cia by the Sierras de Espina and de Espadan. The coast-line is unbroken by any marked inlet and there is no first-class harbour. The-climate is cold and variable in the hilly districts, temperate in winter and very warm in summer in the lowlands. Here irri gation supplements the scanty rainfall and cereals, including rice, the vine and olive, vegetables and hemp are cultivated but fruit and, above all, oranges are the chief products. Cork and locust beans are obtained from the mountain regions where marble is quarried, and fishing is important off the coast. Lead, zinc and iron and other ores are known to be present but in 1924 only three mines operated, producing about ioo tons of lead ore. The chief industries are fish-curing and the manufacture of woollen, linen and silk goods and of porcelain. Oranges, wine, oil and beans are exported. The Barcelona-Valencia railway skirts the coast, passing through Castellon the capital; and the Calatayud Sagunto line crosses the southern extremity of the province. A light railway from Onda links Castellon with its port of El Grao. Castellon (pop. 1930, 36,781), Villareal (18,982), Burriana (14, 675) and Peniscola (3,027), a town of some historical interest, are described in separate articles. The other chief towns are Vall d'Uxo (9,216), Vinaroz (8,281), Villafames (4,154), Almazora (8,072), Benicarlo (7,456), Onda (7,472), Segorbe (6,603), Nules (6,703), Alcala de Chisbert ( 5,499) and Morella (5,883) . (See also VALENCIA.)