Gargellen Valley, Vorarlberg, south-western lateral valley of Montafon valley ( Ill, River), drained by the Suggadinbach stream. The valley separates the Raetikon mountains (to the west) from the Silvretta group; it emerges from a conjunction of the alpine valleys Vergalden and Valzifenz and reaches the Montafon at Galgenuel/St. Gallenkirch (alt. 878 m). A narrow path via Schlappiner Joch (gap, alt. 2,202 m) leads to Switzerland.