'Rough' in the Bible

Every valley shall be lifted up, and every mountain and hill shall become low, And the rough ground shall be like a plain, and the rugged ground like a valley-plain.

And I will lead the blind by a road they do not know; I will cause [them] to tread on paths they have not known. I will make darkness {in their presence} into light and rough places into level ground. These [are] the things I will do, and I will not forsake them.