A wide range of glaciers and glacial structures can be found across the Mont Blanc massif, all of which can be easily reached or viewed. Glaciers cover of the massif, of which fall within France.:: The Mer de Glace is the largest glacier in the western Alps, and the second largest in Europe. It has a total length of from highest snowfield to terminus and an area of 35-40 km² (14-15 sq mi).: