Read it through once

It was a bewildering route for anyone who was not accustomed to face Nature in her wildest moods. On the one side a great crag towered up a thousand feet or more, black, stern, and menacing, with long basaltic columns upon its rugged surface like the ribs of some petrified monster. On the other hand a wild chaos of boulders and debris made all advance impossible. Between the two ran the irregular track, so narrow in places that they had to travel in Indian file, and so rough that only practised riders could have traversed it at all. Yet in spite of all dangers and difficulties, the hearts of the fugitives were light within them, for every step increased the distance between them and the terrible despotism from which they were flying.