Lake Bolsina, located about 100 kilometers north of Rome and surrounded by beautiful landscapes on all sides, is the largest lake in the northern Lazio region and also the largest volcanic lake in all of Europe. It was formed about 370,000 years ago when multiple volcanoes erupted in the area to the extent that the underlying rock In the area of the lake it collapsed in the shape of a bowl, and near it there are many interesting towns that can be visited in one day such as Bolsena, Orvieto, Todi and Siena.