The Lötschenlücke connects the Lötschental to the valley of a glacier with a length of about what in 2014?
Lötschenlücke: The Lötschenlücke (el. 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.
i don't know