The Maderanertal is an Alpine valley of the canton of Uri in Central Switzerland. It is drained by the Chärstelenbach, a stream that is a right tributary of the Reuss at Amsteg. The highest mountain in the Maderanertal is the Oberalpstock with a height of 3,328 metres above sea level. Other important summits are the Schärhorn, the Clariden, the …The Maderanertal is an Alpine valley of the canton of Uri in Central Switzerland. It is drained by the Chärstelenbach, a stream that is a right tributary of the Reuss at Amsteg. The highest mountain in the Maderanertal is the Oberalpstock with a height of 3,328 metres above sea level. Other important summits are the Schärhorn, the Clariden, the Düssi, the Gross Windgällen, the Gross Ruchen, Piz Giuv and the Bristen.