The Metro Alpin is an underground funicular situated above the Swiss town of Saas Fee, in the canton of Valais. Opened in 1984, it links the Felskinn cable-car station ( MSL) on the shore of the Fee Glacier to the Mittelallalin () in the north flank of the Allalinhorn. The Felskinn-Mittelallalin Tunnel has a length of , with an altitude difference of between the two stations.