I estimated the different heights of this roof at not less than from eighteen to sixty feet; but it seldom reached a greater elevation than the latter.

Both roof and walls are in some places very pointed and rough: a circumstance to be ascribed to the stalactites which adhere to them, without, however, forming figures or long sharp points.
From this principal path several smaller ones lead far into the interior of this stony region; but they do not communicate with each other, and one is compelled to return from each side-path into the main road.

Some of these by-paths are short, narrow, and low; others, on the contrary, are long, broad, and lofty.
In one of the most retired of these by-paths I was shewn a great number of bones, which, I was told, were those of slaughtered sheep and other animals.

I could gather, from the account given by the priest of the legend concerning them, that, in days of yore, this cave was the resort of a mighty band of robbers.

This must have been a long, long time ago, as this is related as a legend or a fable.
For my part, I could not tell what robbers had to do in Iceland.