Seroneldeon Tarma (Q. "Threefriends' Pillar") was an old monolith, marking the junction of the divided Dunadan kingdoms of Arthedain, Cardolan and Rhudaur after the division of Arnor. The forces of Angmar had pulled it down in T.A. 1409, but left the broken stone lying within sight of the road. By then it had already acquired its permanent nickname; the merchants who braved the dangers of the Menatar Romen in those dangerous years called it the "Three-fools' Stone."