At the foot of the Laugafjall hill, in a green plain, through which several rivers meander like threads of silver, and where chains of dark-colored mountains, overtopped here and there by distant snow-peaks, form a grand but melancholy panorama, dense volumes of steam indicate from afar the site of a whole system of thermal springs congregated on a small piece of ground which does not exceed twelve acres. In any other spot, the smallest of these boiling fountains would arrest the traveller’s attention, but here his whole mind is absorbed by the Great Geysir. In the course of countless ages this monarch of springs has formed, out of the silica it deposits, a mound which rises to about thirty feet above the general surface of the plain, and slopes on all sides to the distance of a hundred feet or thereabouts from the border of a large circular basin situated in its centre, and measuring about fifty-six feet in the greatest diameter and fifty-two feet in the narrowest. In the middle of this basin, forming as it were a gigantic funnel, there is a pipe or tube, which at its opening in the basin is eighteen or sixteen feet in diameter, but narrows considerably at a little distance from the mouth, and then appears to be not more than ten or twelve feet in diameter. It has been probed to a depth of seventy feet, but it is more than probable that hidden channels ramify farther into the bowels of the earth. The sides of the tube are smoothly polished, and so hard that it is not possible to strike off a piece of it with a hammer.