About Aletsch Glacier: Aletsch is the biggest glacier in the entire Alps mountain range. Long dark lines of crushed rock ride along its surface like stripes. It holds enough water to give everyone on Earth a drink for years. Its surface has long dark stripes of rock, called moraines, that flow along with the ice

Location: The Swiss Alps · Length: About 23 km (14 mi) long, the longest in the Alps · Type: A mountain valley glacier · Country: Switzerland · Ice Amount: Holds many billions of tonnes of ice · Formation: Fed by snow high in the Alps that packs down into ice · Feeds: Meltwater flows into the Rhône River · Protection: Part of a UNESCO World Heritage Site · World Rank: The largest and longest glacier in the Alps