I could only gaze and wonder.

I forgot every thing around me, felt neither cold nor storm, and let my horse pick his way as slowly as he chose, so that I had once almost become separated from my guide.
One of the most considerable of the streams of lava lay in a spacious broad valley.

The lava-stream itself, about two miles long, and of a considerable breadth, traversing the whole of the plain, seemed to have been called into existence by magic, as there was no mountain to be seen in the neighbourhood from which it could have emerged.

It appeared to be the covering of an immense crater, formed, not of separate stones and blocks, but of a single and slightly porous mass of rock ten or twelve feet thick, broken here and there by clefts about a foot in breadth.
Another, and a still larger valley, many miles in circumference, was filled with masses of lava shaped like waves, reminding the beholder of a petrified sea.

From the midst rose a high black mountain, contrasting beautifully with the surrounding masses of light-grey lava.