Gorner Glacier
The Gorner Glacier (Gornergletscher) is a valley glacier found on the west side of the Monte Rosa massif close to Zermatt in the canton of Valais, Switzerland. It is about 12.4 km (7.7 mi) long (2014) and 1 to 1.5 km (0.62 to 0.93 mi) wide. The entire glacial area of the glacier related to Gorner Glacier is 53 km2 (20 sq mi) (2007), which makes it the second largest glacial system in the Alps after the Aletsch Glacier system; however, in length it ranks third behind the Aletsch and Fiescher Glaciers.
Glacier data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).