The Barrow-Downs:

The Barrow-Downs were green downs within which there were barrows predating the arrival of the Dúnedain. In the year 1409, the remaining Dúnedain of Cardolan took refuge in the Barrow-downs during the wars with Angmar. Around 1636 of the Third Age, the Barrow-Downs were inhabited by the Barrow-Wights. After this the Barrow-Downs became a place of great terror. In Sindarin the Barrow-Downs were called Tyrn Gorthad.