Lake Bolsena is a volcanic lake located in central Italy, specifically in the region of Lazio. It is the largest lake in Italy formed by volcanic activity and is known for its clear waters and scenic beauty. The lake is approximately 15 kilometers long and 5 kilometers wide, making it a popular destination for swimming, fishing, and boating. Surrounding Lake Bolsena are charming towns such as Bolsena and Montefiascone, which offer historical sites and local cuisine. The lake is also home to several islands, including Isola Bisentina and Isola Martana, adding to its picturesque landscape and attracting visitors year-round.