Saas Almagell lies in the Pennine Alps and the territory of the municipality encompasses a large number of summits. The highest are the Rimpfischhorn, Strahlhorn, Allalinhorn and Weissmies (all over 4,000 metres above sea level). Other important summits are the Portjengrat, Sonnighorn, Stellihorn, Egginer, Jazzihorn, Almagellhorn and Spechhorn. The Mattmarksee is the largest lake in the valley.