Montsalvins is an artificial lake located in the Swiss canton of Friborg, with a capacity of about 12.6 million cubic meters and an area of 0.74 square kilometres. It is located on the road to Juan Bas between the villages of Broc and Charme, surrounded by trees and green spaces on all sides, and is famous for being a popular destination. For hiking trails, there is a suspension bridge near and a dam from the 1920s.