Posted in Web Splugen Pass – 2019 All You Need to Know BEFORE You Go … July 10, 2019 The Splügen Pass is a high mountain pass which marks the boundary between the Lepontine and Rhaetian Alps, respectively part of the Western and Eastern Alps. : https://www.tripadvisor.com/Attraction_Review-g1566265-d8308807-Reviews-Splugen_Pass-Splugen_Canton_of_Graubunden_Swiss_Alps.html