Complex sentence: It occupies a narrow valley formed by the convergence of the Brittas River and the Liffey, which runs south into Blessington Lakes, is bounded by Goldenhill, Cromwellstownhill and Cupidstownhill to the north, northwest and southwest and Butterhill and Ballyfoyle to the east.
Split into simpler sentences: It occupies a narrow valley formed by the convergence of the Brittas River and the Liffey, which runs south into Blessington Lakes. The valley is bounded by Goldenhill, Cromwellstownhill and Cupidstownhill to the north and west and Butterhill and Ballyfoyle to the east.