Fūcĭnus

, a lake of Italy in the country of the Marsi, at the north of the Liris, attempted to be drained by Julius Cæsar and afterwards by Claudius, by whom 30,000 men were employed for 11 years to perforate a mountain to convey the water into the Liris, but with no permanent succe . The lake, surrounded by a ridge of high mountains, is now called Celano , and is supposed to be 47 miles in circumference, and not more than 12 feet deep on an average. Pliny , bk. 36 , ch. 15 .— Tacitus , Annals , bk. 12 , ch. 56 .— Virgil , Æneid , bk. 7 , li. 759 .