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POPULAR SCIENCE MONTHLY 



On the way to Geyser. 



to one hundred and fifty feet, and below the trap of the Laugafjall 

 are extinct geyser sites forming six to seven well-marked craters. The 

 geyserite broken and disintegrated builds up these mounds, and they 

 slope down to the upper active geyser tract by narrow fissures or defiles 

 (water courses), between rounded low backs of red or white ochreous 

 soil. The source of the heat apparently lies towards the north and 

 probably below the trap-hills. 



It seems also likely that a deposit has choked up the various chan- 

 nels of a few larger geysers, which have thus become dissected into a 

 number of smaller ones which by tortuous passages now are probably 

 connected with the original larger conduits. 



Then on to Gullfoss, across a " bad " river, the Tungufljot, and 

 ever a rolling country in which there are farmhouses, bogs and singular 

 desert-like tracts of stony fragments and sand, which latter has been 

 sculptured and heaped up by wind. On the way the glorious high back 

 and silver surfaces of the Blafellsjokull are seen shining against an 

 icy blue sky, and behind an effective frame of serrated peaks — the 

 Iarthettur — which blackly show up in minarets and saw-tooth outlines 

 against its frigid sides. It made a supreme picture. 



