'Land of Seven Rivers' (these being Gelion and its tributaries flowing down from the Blue Mountains), the land of the Green-elves. Cf. Treebeard's song in The Two Towers III 4: 'I wandered in Summer in the elm-woods of Ossiriand. Ah! the light and the music in the Summer by the Seven Rivers of Ossir!' See Lindon. 108, 110, 133, 144-8, 167, 170-1, 182, 184, 229, 239, 289-91, 354