What is the largest glacier in the Alps?
The Aletsch Glacier is the largest glacier in the Alps. It has a length of about 23 km (14 mi) (2014), and covers about 81.7 km2 (31.5 square miles) (2011) in the eastern Bernese Alps in the Swiss canton of Valais. The Aletsch Glacier is composed of four smaller glaciers converging at Concordia Place. The whole area, including other glaciers is part of the Jungfrau-Aletsch Protected Area, which was declared a UNESCO World Heritage Site in 2001
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What is the longest and deepest tunnel in the world?
Eurotunnel (English Channel)
Lötschberg (Switzerland - Germany)
Seikan (Hokkaido-Honshu Island)