** TTT - Helm's Deep

Still some miles away, on the far side of the Westfold Vale, lay a green coomb, a great bay in the mountains, out of which a gorge opened in the hills. Men of that land called it Helm's Deep, after a hero of old wars who had made his refuge there. Ever steeper and narrower it wound inward from the north under the shadow of the Thrihyrne, till the crowhaunted cliffs rose like mighty towers on either side, shutting out the light.

--TTT, "Helm's Deep"