The web team for the Lord of the Rings Online has published another of their Exploring Middle-earth articles. The focus of this installment is the 'Cairn of Honour', a sacred shrine for those Hill-men that remember.

When Eärnur and Glorfindel destroyed the hosts of Angmar and Rhudaur and drove the Witch-king from the North, the remnants of the Hill-men of Rhudaur escaped into the hills of the Witch-realm, hiding from the onslaught of the armies of Gondor and the Elves. Each clan pledged to the others an oath of honour never again to serve the Shadow in the East, and to live in peace with one another. As a token of this oath, they built the Cairn of Honour in the hills of Angmar.

You can read the article here, or here from the European site.