I am trying to locate a GIS freely downloadable shapefile (preferably polygon) of European main mountain chains (not an elevation data), eg Alps, Carpathian Mountains. I tried variuos sources , including Natural Earth, EEA, and many others, but couldn't find the right data. Can anybody help??
At least for Romanian Carpathians you can find the map of relief units (as polygons) on http://earth.unibuc.ro/download/harta-unitati-relief-romania.