[Footnote: 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.] 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
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.

[Figure: fig-p051.gif with the following caption:
1 Plain of Thingvalla.
2 Lake.
3 Lava plateau.
4 Almanna Gja.
5 Rabna Gja.]