Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Gorner Glacier 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 14 km (8.7 mi) long 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 57 km2 (22 sq mi) (1999), which makes it the second largest glacial system in the Alps after the Aletsch Glacier system. Numerous smaller glaciers connect with the Gorner Glacier. Its tribunaries are Gornergletscher (after which the whole system is named),