The circle of the thrones of the Valar, outside¹ the golden western gates of Valmar, near the Green Mound of Ezellohar where the Two Trees grew. It was here that Manwë would gather the Valar when weighty counsels were needed, as for example before the War of Wrath that shattered Middle-earth but brought Melkor in chains to Valinor. A council was also held here when the Istari were selected to be sent to the aid of Elves and Men, and among the Maiar present at that council was Olórin, who would become known in Middle-earth as 'Gandalf'.

Note that the word 'Doom' is used in the title of the Ring of Doom in the sense of 'judgement'; this was the place where the Valar reached the momentous decisions that would affect all of Arda, often rendered by Mandos in his role as the Doomsman of the Valar.