Valle Maggia

Valle Maggia is an alpine valley in the Vallemaggia district of the canton of Ticino in Switzerland, carved by the Maggia River as it flows from the Cristallina peak down to Lake Maggiore at Ascona. Covering 569.64 square kilometers, it is the largest valley in Ticino and one of the widest on the southern side of the Alps, with terrain ranging from 254 meters at Ponte Brolla to 3,272 meters at the Basodino peak. Its lower reaches are flanked by steep granite walls above a riverbed shaped by erosion and historic flooding, while its upper forks split into the glacially carved troughs of Val Bavona and Val Lavizzara, the latter known for marble and gneiss quarried at Peccia. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/