§ Of the Beginning of Days The Silmarillion

And when Valinor was full-wrought and the mansions of the Valar were established, in the midst of the plain beyond the mountains they built their city, Valmar of many bells. Before its western gate there was a green mound, Ezellohar, that is named also Corollairë; and Yavanna hallowed it, and she sat there long upon the green grass and sang a song of power, in which was set all her thought of things that grow in the earth. But Nienna thought in silence, and watered the mould with tears. In that time the Valar were gathered together to hear the song of Yavanna, and they sat silent upon their thrones of council in the Máhanaxar, the Ring of Doom near to the golden gates of Valmar, and Yavanna Kementári sang before them and they watched.