The Lötschenlücke connects the Lötschental to the valley of a glacier with a length of about what in 2014?
Lötschenlücke:  3164 m.) is a high mountain pass of the Bernese Alps, connecting the Lötschental to the valley of the Aletsch Glacier in the canton of Valais. Aletsch Glacier: The Aletsch Glacier (German: "Aletschgletscher" ) or Great Aletsch Glacier ("Grosser Aletschgletscher ") is the largest glacier in the Alps.
i don't know