began his journey across the inland ice, the highest peak projecting through the ice-covering was Gamel's Nunatak, 6440 ft., in 64 deg. 34' N. In the region of Angmagssalik, which is very mountainous, the mountains rise to 6500 ft., the most prominent peak being Ingolf's Fjeld, in 66 deg. 20' N., about 6000 ft., which is seen from far out at sea, and forms an excellent landmark. This is probably the Blaaserk (i.e. Blue Sark or blue shirt) of the old Norsemen, their first landmark on their way from Iceland to the Oster Bygd, the present Julianehaab district, on the south-west coast of Greenland. A little farther north the coast is much lower, rising only to heights of 2000 ft., and just north of 67 deg. 10' N. only to 500 ft. or less.[20] The highest mountains near the inner branches of Scoresby Fjord are about 7000 ft. The Petermann Spitze, near the shore of Franz Josef Fjord, measured by Payer and found to be 11,000 ft., has hitherto been considered to be the highest mountain in Greenland, but according to Nathorst it "is probably only two-thirds as high as Payer supposed," perhaps between 8000 and 9000 ft. Along the west coast of Greenland the mountains are generally not quite so high, but even here peaks of 5000 and 6000 ft. are not uncommon. As a whole the coasts are unusually mountainous, and Greenland forms in this respect an interesting exception, as there is no other known land of such a size so filled along its coasts on all sides with high mountains and deep fjords and valleys.