VII.]

THINGVALLA.

67

The inclosed section will perhaps help you a little to comprehend what I am afraid my description will have failed to bring before you.

1. Are the two chasms called respectively Almanna Gja,1 or Main Gja, and Hrafna Gja, or Raven's Gja. In the act of disruption the sinking mass fell in, as it were, upon itself, so that one side of the Gja slopes a good deal back as it ascends; the other side is perfectly perpendicular, and at the spot I saw it upwards of one hundred feet high. In the lapse of years the bottom of the Almanna Gja has become gradually filled up to an even surface, covered with the most beautiful turf, except where a river, leaping from the higher plateau over the precipice, has chosen it for a bed. You must not suppose, however, that the disruption and land-slip of Thingvalla took place quite in the spick and span manner the section might lead you to imagine; in some places the rock has split asunder very unevenly, and the Hrafna Gja is altogether a very untidy rent, the sides having fallen.

suppositions may be justly considered by the philosophers, they will perhaps serve to convey to the unlearned reader, for whose amusement (not instruction) these letters are intended, the impression conveyed to my mind by what I saw, and so help out the picture I am trying to fill in for him.

1 Almanna may be translated main; it means literally all men's; when applied to a road, it would mean the road along which all the world travel.

in in many places, and almost filled up the ravine with ruins. On the other hand, in the Almanna Gja, you can easily distinguish on the one face marks and formations exactly corresponding, though at a different level, with those on the face opposite, so cleanly were they separated.

2. Is the sea of lava now lying on the top of the original surface. Its depth I had no means of ascertaining.

3. Is the level of the surface first formed when the lava was still hot.

4. Is the plain of Thingvalla, eight miles broad, its surface shattered into a network of innumerable crevices and fissures fifty or sixty feet deep, and each wide enough to have swallowed the entire company of Korah. At the foot of the plain lies a vast lake, into which, indeed, it may be said.