We were now clear of the pumice, and after a hard scramble over some very rough lava, part of which had flowed from an ancient volcano not marked upon the map, about eight miles S.S.E. of Herðubreið, part, apparently, from the Dyngjufjöll mountains, and some from Trölladýngjur (Troll’s bowers). Here we camped by a pool of water.
Herðubreið, whose trigonometrical height is 5447 feet, is a snow-covered cone, resting upon a perpendicular mass of rock, whose height equals about twice the diameter of the cone. Upon its south-east and west sides are tali of disintegrated and greatly weather-worn rocks, and bulging, misshapen masses of agglomerate. At every point except the S.E. and N.N.W. the sides are perfectly perpendicular, presenting walls of about 2000 feet from the base of the mountain to the commencement of the snow-covered cone; it is surrounded by a dry sandy foss, and choked in places with rounded débris, which had fallen from the agglomerate of which Herðubreið is principally composed.
Probably the most remarkable feature of this mountain is that no streams of water flow down its sides, while the base of most other Icelandic snow-capped mountains are generally watered with streams, which, as we have already seen, often disappear in sandy or cavernous ground; but here all the water which must result from the melting of the frozen accumulation upon the summit of Herðubreið seemed utterly lost, until it issued in springs such as those which form the source of the Lindá, at a considerable distance from the base of the mountain, or collects in pools such as Herðubreiðvatn.
The gulleys which had in many places worn the side of Herðubreið into the fantastic forms so peculiar to this formation (agglomerate), appear to be the result of rain and wind, and the only points from which the mountain is assailable are the S.S.E. and N.W. It was from the latter that Captain Burton attempted it in 1872, and that experienced traveller seems to regard it as the core of a much larger mountain; possibly such may be the case, but its shape is decidedly against its being a volcano of anything but the most ancient order. History tells us, however, that this mountain has erupted upon several occasions. The eccentricity of its form is sufficient to suggest any amount of speculations as to its origin and character, while nothing but a careful investigation of the mountain from the base to the apex could enable anyone to arrive at a satisfactory conclusion. The palagonitic agglomerate (which, as I have said, constitutes the greater part of the mountain), is of so friable a nature, and so rapid is the erosive influence of the Icelandic climate, while so disturbed and metamorphosed has the whole of the island been by volcanic agency, that one ceases to wonder at the eccentric shape and anomalous character of its mountains.
I much regretted being compelled to pass by Herðubreið without attempting to ascend it, but our foot gear was in tatters and my sore toe required immediate attention, so we camped in a large gulley of sand and lava, which extended a mile or more, gradually rising to the level of the plain towards the south. Here, while we were lying with the tent spread over us all, blanket fashion, and had just dropped off to sleep, we were suddenly awakened by such a blast of wind, and a deluge of the finest sand and pumice, that for the moment I didn’t know what it was. At first we started to our feet, only to get our eyes full of finely-powdered pumice, and as I tried to speak I got my mouth full. We saw all the smaller articles of our packs making the most speedy tracks for the more settled portions of the country. I tried to save my hat, but in so doing kicked my bad toe against a lava block, tangled my feet up in the tent rope, and fell down, the latter being about the most sensible thing I could do, for in a few moments the gust was past and I could look up.
Blind with the sand, and wild with the agony it was occasioning us, we all rushed for the water, and opened our eyes in it. While so doing there came another gust, which compelled us to wait upon our knees, keeping our heads in the shallow water until it was over; and then, soaked with sand and water, we made our way back to where our things had been. I say had been, for all were not there then; my broad-brimmed Danish hat, and half my small etceteras were gone, and, worst of all, my map and case, where were they? Four white spots upon a lava field a quarter of a mile away caused me to run—yes, run—bad toe and all! However, my painful and spasmodic effort was amply repaid by the recovery of Olsen’s map, which had been nicely mounted and packed up in a case by the bookbinder at Reykjavík; now, even the bookbinder would scarcely have recognised it. Its journey across the Vatna Jökull had not improved its “personnel,” but the short cut it had made through the neighbouring pool had in some places rendered it illegible. Fortunately the Vatna Jökull and its surroundings, with my various markings, were miraculously preserved, but its case I never saw again.
To return to camp. Everything that had been buried in the sand had been dug out, and just as we were about to start again another gust came sweeping down the gulley, half smothering us. We buried our faces in our mackintosh coats until it was past, when my companion Thorlákur remarked, “This is not fine;” to which I assented in the most emphatic language my stock of Icelandic would command. We now made very fair progress over the lava field, where, under an overhanging lava block, we bathed our eyes with sulphate of zinc and rose water, which had often been a great relief during my Icelandic journeys, and I advise all travellers who may follow in my wake by no means to omit taking so essential a medicament. We soon reached the grass at the source of the Lindá, which river rises from a single spring about two miles N.N.E. of Herðubreið. Here we took the rest we had been unable to obtain at our last halting-place, and by evening we reached the remainder of our party at the Grafalandá, where I was rejoiced to find our horses and a good supply of provisions, which had been sent with a kind note from the good people of Grímstaðir, who had sent us some pancakes, flat bread, coffee and milk, and the latter, though sour, was very acceptable. From Vopnafjörd I also had ordered some schnapps and chocolate; so that we made what seemed to us a right royal feed, and after a good wash, I enjoyed a night of sound rest in the sleeping bag, which had previously sheltered my men who had been waiting for us upon the banks of the Grafalandá.
At 5 A.M. the next morning we were on horseback, and away over the sand and the lava of Mývatns Örœfí, leaving the Vatna Jökull and the land of the outlaws behind us, enveloped in clouds of light grey dust which were blown up from the pumice by a S.E. wind. This dust, I must explain, was of the most irritating nature, resembling finely-powdered glass; our clothes got saturated with it, and I was already beginning to feel its effect in the severe abrasion of skin it was inflicting upon me. By 12 A.M. we were level with Grímstaðir, only much more to the west, and here we stopped to allow the horses to graze off the wild oats, for the heat of the sun was intense. After lunch we must all have taken a nap, for suddenly looking up, I found it was one o’clock, and the horses were nowhere in sight, and more than an hour elapsed before we recovered them. Having secured the vagrant animals, we made for the new lava, which was produced by the eruptions of last spring in the Mývatns Örœfí. Sulphurous and acid vapours had long announced its proximity, although the wind was unfavourable for their reaching so far. This lava stream, which is about fifteen miles long, and varies from one to three broad, has flowed almost entirely over ancient lava streams, most of which have flowed from an old crater situated in the vicinity, called Sveinagjá. The new lava extended to about an English mile to the north of the old road from Reykjahlíð to Grímstaðir.