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Switzerland. Canton Ticino. Verzasca valley. View from Vogorno on the empty reservoir of the Verzasca dam. Swiss flag floating in the air. The reservoir is dried due to the first renovation works since dam’s construction (60 years ago). The Contra Dam, commonly known as the Verzasca Dam, is an arch dam on the Verzasca River. The dam is 220 metres high by 380 metres in length. It creates the Vogorno lake, a water surface area of 1.68 km2, and supports the 105 MW Verzasca hydroelectric power station. The dam was constructed between 1961 and 1965. The reservoir is empty because Verzasca SA technicians must, among other things, renew the protection against corrosion in the shaft under the lake. The concrete walls of the expansion chamber also need to be renovated. The flag of Switzerland (German: Schweizerfahne; French: drapeau de la Suisse; Italian: bandiera svizzera; Romansh: bandiera de la Svizra) displays a white cross in the centre of a square red field. The white cross is known as the Swiss cross. 22.01.22 © 2022 Didier Ruef