Nor is there any sign of moraines, glacier-scorings or other traces of the ice-age.
The principal terminal moraines are associated with the ice of the Wisconsin epoch.
Glaciation was formerly much more extensive, old moraines being observed down to 12,000 ft.
The presence of enormous glaciers in the Ice Age is attested by the moraines at the Atlantic end, and by other indications farther east.
Numerous glacial marks, however, such as polished striated rocks, moraines, erratic blocks, &c., prove that the whole of Greenland, even the small islands and skerries outside the coast, has once been covered by the inland ice.