Definition of "cragged"

Is not the plain way more easy than the rough and cragged? is not the fair way more pleasant and passable than the foul?

1658, Isaac Barrow, Sermons on Evil-Speaking‎

Over the broadest there seemed to spring a cragged and stupendous arch, from which, as from the jaws of hell, gushed the sources of the sudden Phlegethon.

1834, Edward George Bulwer-Lytton, The Last Days of Pompeii‎