'Crags' in the Bible

Does the snow of Lebanon ever leave the highland crags?Or does cold water flowing from a distance ever fail?

“Leave the cities and dwell among the crags,O inhabitants of Moab,And be like a dove that nestsBeyond the mouth of the chasm.

"Look, I'm against you, destroying mountain, who destroys the whole earth," declares the LORD. "I'll stretch out my hand against you and roll you down from the crags. And I'll make you a burned-out mountain.