HELLWN  , a

town of south-eastern Spain, in the province of Albacete, on the Albacete-Murcia railway . Pop . (1900), 12,558 . Hellfn is built on the outskirts of the low hills which line the left bank of the river Mundo . It possesses the remains of an old Roman castle and a beautiful parish church, the masonry and marble pavement at the entrance of which are worthy of special notice . The surrounding country yields wine, oil and saffron in abundance; within the town there are manufactures of coarse cloth, leather and pottery . Sulphur is obtained from the celebrated mining district of Minas del Mundo, 12 m . S., at the junction between the Mundo and the Segura; and there are warm sulphurous springs in the neighbouring village of Azaraque . Hellfn was known to the Romans who first exploited its sulphur as Illunum .