On high—their wide long lake below,[g] And the blue Rhone in fullest flow;[29] I heard the torrents leap and gush O'er channelled rock and broken bush; I saw the white-walled distant town,[30] And whiter sails go skimming down;340 340 And then there was a little isle,[27][31] [27] Which in my very face did smile, The only one in view; A small green isle, it seemed no more,[32] Scarce broader than my dungeon floor, But in it there were three tall trees, And o'er it blew the mountain breeze, And by it there were waters flowing, And on it there were young flowers growing, Of gentle breath and hue.350 350 The fish swam by the castle wall,