Journey to the Centre of the Earth
Chapter 15: Snæfell at Last

Copyright© 2012 by Jules Verne

Snæfell is 5,000 feet high. Its double cone forms the limit of a trachytic belt which stands out distinctly in the mountain system of the island. From our starting point we could see the two peaks boldly projected against the dark grey sky; I could see an enormous cap of snow coming low down upon the giant's brow.

We walked in single file, headed by the hunter, who ascended by narrow tracks, where two could not have gone abreast. There was therefore no room for conversation.

After we had passed the basaltic wall of the fiord of Stapi we passed over a vegetable fibrous peat bog, left from the ancient vegetation of this peninsula. The vast quantity of this unworked fuel would be sufficient to warm the whole population of Iceland for a century; this vast turbary measured in certain ravines had in many places a depth of seventy feet, and presented layers of carbonized remains of vegetation alternating with thinner layers of tufaceous pumice.

As a true nephew of the Professor Liedenbrock, and in spite of my dismal prospects, I could not help observing with interest the mineralogical curiosities which lay about me as in a vast museum, and I constructed for myself a complete geological account of Iceland.

This most curious island has evidently been projected from the bottom of the sea at a comparatively recent date. Possibly, it may still be subject to gradual elevation. If this is the case, its origin may well be attributed to subterranean fires. Therefore, in this case, the theory of Sir Humphry Davy, Saknussemm's document, and my uncle's theories would all go off in smoke. This hypothesis led me to examine with more attention the appearance of the surface, and I soon arrived at a conclusion as to the nature of the forces which presided at its birth.

Iceland, which is entirely devoid of alluvial soil, is wholly composed of volcanic tufa, that is to say, an agglomeration of porous rocks and stones. Before the volcanoes broke out it consisted of trap rocks slowly upraised to the level of the sea by the action of central forces. The internal fires had not yet forced their way through.

But at a later period a wide chasm formed diagonally from south-west to north-east, through which was gradually forced out the trachyte which was to form a mountain chain. No violence accompanied this change; the matter thrown out was in vast quantities, and the liquid material oozing out from the abysses of the earth slowly spread in extensive plains or in hillocky masses. To this period belong the felspar, syenites, and porphyries.

But with the help of this outflow the thickness of the crust of the island increased materially, and therefore also its powers of resistance. It may easily be conceived what vast quantities of elastic gases, what masses of molten matter accumulated beneath its solid surface whilst no exit was practicable after the cooling of the trachytic crust. Therefore a time would come when the elastic and explosive forces of the imprisoned gases would upheave this ponderous cover and drive out for themselves openings through tall chimneys. Hence then the volcano would distend and lift up the crust, and then burst through a crater suddenly formed at the summit or thinnest part of the volcano.

To the eruption succeeded other volcanic phenomena. Through the outlets now made first escaped the ejected basalt of which the plain we had just left presented such marvellous specimens. We were moving over grey rocks of dense and massive formation, which in cooling had formed into hexagonal prisms. Everywhere around us we saw truncated cones, formerly so many fiery mouths.

After the exhaustion of the basalt, the volcano, the power of which grew by the extinction of the lesser craters, supplied an egress to lava, ashes, and scoriae, of which I could see lengthened screes streaming down the sides of the mountain like flowing hair.

Such was the succession of phenomena which produced Iceland, all arising from the action of internal fire; and to suppose that the mass within did not still exist in a state of liquid incandescence was absurd; and nothing could surpass the absurdity of fancying that it was possible to reach the earth's centre.

So I felt a little comforted as we advanced to the assault of Snæfell.

The way was growing more and more arduous, the ascent steeper and steeper; the loose fragments of rock trembled beneath us, and the utmost care was needed to avoid dangerous falls.

Hans went on as quietly as if he were on level ground; sometimes he disappeared altogether behind the huge blocks, then a shrill whistle would direct us on our way to him. Sometimes he would halt, pick up a few bits of stone, build them up into a recognisable form, and thus made landmarks to guide us in our way back. A very wise precaution in itself, but, as things turned out, quite useless.

Three hours' fatiguing march had only brought us to the base of the mountain. There Hans bid us come to a halt, and a hasty breakfast was served out. My uncle swallowed two mouthfuls at a time to get on faster. But, whether he liked it or not, this was a rest as well as a breakfast hour and he had to wait till it pleased our guide to move on, which came to pass in an hour. The three Icelanders, just as taciturn as their comrade the hunter, never spoke, and ate their breakfasts in silence.

 
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