Lord of the Rings Online Lorebook – Cairn of Honor
The Lord of the Rings Online: Shadows of Angmar Lorebook explores a new landmark of Middle-earth. The Cairn of Honor is one of the many imaginations that have fleshed out parts of world that aren’t described in detail in J.R.R. Tolkien’s works. This testament to oaths long forsaken stands in the Hills of Angmar.
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.
The Enemy, however, would not be so easily denied, and one by one the clans fell again into evil, abandoning their pledges. The Cairn remains a symbol of respect and honour to those few Hill-men who have resisted, though the evil clans claim the land surrounding it. It may be that with the help of the Rangers of the North, the few free Hill-men may again reclaim it, but that day will be long in coming.
via LotRO Lorebook