Crag

DEF: a high, rough mass of rock that sticks out from the land around it.

EX: The craggy peaks of the mountains are so uneven that no hiker could ever stand on them.

Merriam-Webster Online Dictionary
crag (noun)
1.
a steep rugged rock or cliff
2.
archaic a sharp detached fragment of rock
crag (noun)
chiefly Scottish - neck throat