Lago di Posta Fibreno
Lago di Posta Fibreno is an Italian lake located in Posta Fibreno, a municipality of the Province of Frosinone, Lazio. At an elevation of 288 m, its surface area is 0.287 km. The lake is in a karstic terrain and rich in underwater springs. Fauna. The lake of Posta Fibreno is home of an endemic species of trout, the Fibreno trout ("Salmo fibreni"), along with the more widespread Mediterranean trout ("Salmo cettii").