Wishing to quit this spot without delay, we determined upon taking the route known as the Arnarfells-vegr upon the west bank of the Thjórsá rather than follow the track upon the east, as by doing so we should be able to cross the numerous smaller rivers whose confluent waters form the Thjórsá, one by one, instead of having to wait perhaps a day or so, until the waters of the Thjórsá should be sufficiently low to enable us to ford them.
In the course of our journey we passed between Arnarfells Jökull and Tungufells Jökull, and thence bearing to the west, we got as close to the former as possible in order that we might cross these smaller arms at their source. Some of these arms, I imagine, must be very difficult in warm weather, for even upon this cold and stormy day they were in many places over our horses’ girths.
Arnarfell, upon the N.E., rises from a band of glaciers, from which steep slopes of snow sweep up to the black peaks of Arnarfell-hið-Mikla which must be of considerable altitude, a little more than a Danish mile away from the termination of the glacier. The nature of the ground we were traversing precluded the possibility of quick riding, hence it took us five hours more to reach Arnarfell-hið-Mikla, which was to be our destination for the night. This elevation is a cluster of eminences formed of agglomerate, which has been weathered into peaks of considerable height, and these are traversed by several dykes and intruded masses of basaltic lava. Here we found a good patch of grass and angelica, extending along the sides of Arnarfell-hið-Mikla, as well as along the banks of the river washing its eastern base.
Our arrival at this part disturbed a bevy of swans, which at this season of the year (August) lose the feathers of their wings, of course preventing their flight. Taking advantage of this, chase was immediately given, and four of their number very soon captured.
I am glad to say the next morning showed us a more cheery prospect, for a stiff breeze blew from the N.W., and although the clouds hung upon the mountains, the sun occasionally broke through, encouraging us to put some of our wet things out to dry. While this was being done I ascended the Arnarfell-hið-Mikla, and was well repaid for my trouble, for the clouds were lifting from the adjacent mountains, which gave me a peep at the Vatna Jökull, as well as the more western hills, over the broad plain lying between it and the Arnarfells Jökull. The Sprengisandr is here cut up by a network of rivers and streams, which upon our side of the Sprengisandr all flowed into the Thjórsá. We now pursued our way with a bright sun shining upon us; the ground was in most places covered with swampy moss, which was much better travelling than the stones of the preceding day. Many streams with quicksands had to be crossed, whose waters were all the deeper for the fine weather we were enjoying. Turning thence directly southwards we struck the main stream of the Thjórsá. Travellers to the south who take the eastern route generally cross this stream at this point, but they are sometimes detained for days in consequence of freshets, which may occur at any season of the year; therefore the west side of the Thjórsá, though a little longer, is found to be much the surer road. Here we saw a number of sheep grazing upon the opposite bank, belonging to farmers in the south; and as may be well imagined, we hailed their appearance as the first sign of the “Suðurland” we were approaching.