The curse of sterility rests chiefly on the south-eastern and central parts of the island. Here nothing is to be seen but deserts of volcanic stone or immense ice-fields, the largest of which--the Klofa Jökul--alone extends over more than 4000 square miles. The interior of this vast region of névè and glacier is totally unknown. The highest peaks, the most dreadful volcanoes of the island, rise on the southern and south-western borders of this hitherto inaccessible waste; the Oraefa looking down from a height of 6000 feet upon all its rivals--the Skaptar, a name of dreadful significance in the annals of Iceland, and farther on, like the advanced guards of this host of slumbering fires, the Katla, the Myrdal, the Eyjafjalla, and the Hecla, the most renowned, though not the most terrible, of all the volcanoes of Iceland. As the ice-fields of this northern island far surpass in magnitude those of the Alps, so also the lava-streams of Ætna or Vesuvius are insignificant when compared with the enormous masses of molten stone which at various periods have issued from the craters of Iceland. From Mount Skjaldebreith, on both sides of the lake of Thingvalla as far as Cape Reykjanes, the traveller sees an uninterrupted lava-field more than sixty miles long, and frequently from twelve to fifteen broad; and lava-streams of still more gigantic proportions exist in many other parts of the island, particularly in the interior. In general, these lava-streams have cooled down into the most fantastic forms imaginable. “It is hardly possible,” says Mr. Holland, “to give any idea of the general appearance of these once molten masses. Here a great crag has toppled over into some deep crevasse, there a huge mass has been upheaved above the fiery stream which has seethed and boiled around its base. Here is every shape and figure that sculpture could design or imagination picture, jumbled together in grotesque confusion, whilst everywhere myriads of horrid spikes and sharp shapeless irregularities bristle amidst them.” By the eruptions of the Icelandic volcanoes many a fair meadow-land has been converted into a stony wilderness; but if the subterranean fires have frequently brought ruin and desolation over the island, they have also endowed it with many natural wonders. In the “burning mountains” of Krisuvik, on the south-western coast, a whole hill-slope, with a deep narrow gorge at its foot, is covered with innumerable boiling springs and fumaroles, whose dense exhalations, spreading an intolerable stench, issue out of the earth with a hissing noise, and completely hide the view. [Illustration: 40. EFFIGY IN LAVA.]