$Eroded limestone in the Alps on the Gamsalp/Gamserrugg, Canton St. Gallen, Swiss. The geological farmation is called as \'Helvetic zone$

eroded limestone in the alps with alpine vegetation

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geology geologie petrology petrologie gamserrugg gamsalp toggenburg st gallen switzerland schweiz karst limestone kalkstein verwitterung erosion degredation dolinenkarst area landscape mountain range wildhaus alpen alps alpstein serrugg hinterrugg alm almwiesen churfirsten helvetischer sedimentationstrog swiss sedimentation trough helvetic nappes zone mesozioc helvetikum helvetisches system geoscience geowissenschaften alpenflora rocks felsen steinformationen stone structures alpine flora karstgebiet