Lago del Narèt is a steep road in Switzerland
Lago del Narèt is a high mountain lake at an elevation of 2.310m (7,578ft) above the sea level, located in in the district of Vallemaggia in the canton of Ticino in Switzerland.
Set high in Val Sambuco, the road to the summit is totally paved. It was built in the 1950's. While the profile shows a bunch of full kilometres at 10%, 11%, 12%, etc – there are some short stretches much, much steeper, hitting an 18% of maximum gradient through some of the ramps. The narrow track keeps climbing steeply through a dense forest of evergreens. Then, near the top, the road is fantastic, but also has a short descent before the dam itself.
Starting at Lavizzara, the road to the lake is 21.9 km (13.60 miles) long. Over this distance the elevation gain is 1570 meters. The average gradient is 7.16%. The drive offers stunning views at Lago del Sambuco and in the top section including the dam itself. In the final few kilometres, there are three more small lakes before reaching Lago di Naret.