The presence of the sea in these fjords is an accident.
Apart from the fjords and lakes the chief beauties of the Alps are glaciers and waterfalls.
- The coasts of Greenland are for the most part deeply indented with fjords, being intensely glaciated.
On the west coast there are also many great fjords.
Hitherto marine conditions were confined to the littoral; in Middle Miocene times (Helvetian) the sea broke in and spread in a south-east direction in the form of long ramified fjords but did not extend as far as the Sahara.