The Blenio Valley (Valle di Blenio) in northern Ticino stretches from Biasca up to the Lukmanier Pass. On the valley trail from Biasca via Acquarossa to Olivone, one encounters well-preserved villages and culturally historical sights. . The holiday resort of Olivone at the foot of the Sosto (2221m) is the starting point for many summertime excursions. In addition to nature, the valley offers a wide range of cultural activities with many museums and churches.