The highest village in the Val Bregaglia valley is Casáccia (1,458 m/4,784ft; pop. 60), from which the old bridle-path, one of the busiest routes through the Alps in medieval times, crossed the Pass da Sett (Septimer pass) to Bivio in the Sursés (Oberhalbstein) valley. The ruined Turratsch watch-tower and the 16th C. hospice are relics of these
earlier days. A cableway 2,500 m/8,203ft long belonging to the hydroelectric station which supplies power to Zurich (available for the transport of visitors by prior arrangement) leads up to the Albigna reservoir (2,163 m/7,097ft: dam 115 m/377ft high).