Piz Badus or Six Madun is a

mountain A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited Summit (topography), summit area, and ...

in the

Lepontine Alps , topo_map= Swiss Federal Office of Topography swisstopo , photo=MonteLeone0001.jpg , photo_caption=Monte Leone , country_type= Countries , country= , subdivision1_type= Cantons, Regions , subdivision1= , parent= Western Alps , borders_o ...

, lying on the border between the cantons of

Uri Uri may refer to: Places * Canton of Uri, a canton in Switzerland * Úri, a village and commune in Hungary * Uri, Iran, a village in East Azerbaijan Province * Uri, Jammu and Kashmir, a town in India * Uri (island), an island off Malakula Islan ...

and Graubünden. In its northwestern face, which is the Graubünden side, lies

Tomasee The Tomasee ( rm, Lai da Tuma or ) is a lake at the northern face of Piz Badus, above the village of Tschamut in Grisons, Switzerland. Its surface area is . It is the source of the Anterior Rhine and is deemed to be the official source of the Rh ...

, source of the

Anterior Rhine The Vorderrhein (German; English: ''Anterior Rhine''; Sursilvan: ; Sutsilvan: ''Ragn Anteriur''; Rumantsch Grischun, Vallader, and Puter: ''Rain Anteriur''; Surmiran: ''Ragn anteriour'') is one of the two sources of the Rhine. Its catchment are ...

. It is possible to reach the lake on a path from

Oberalp Pass Oberalp Pass ( rm, Alpsu or ''Cuolm d'Ursera''; german: Oberalppass) (2044 meters above sea level) is a high mountain pass in the Swiss Alps connecting the cantons of Graubünden and Uri between Disentis/Mustér and Andermatt. Winter closure The ...

, suitable for most walkers although still a mountain trail.Hike Switzerland to the source of the Rhine in Graubünden
/ref>

References

External links

Piz Badus on Hikr
Mountains of the Alps Alpine three-thousanders Alpine Rhine basin Mountains of Graubünden Mountains of the canton of Uri Graubünden–Uri border Lepontine Alps Mountains of Switzerland Two-thousanders of Switzerland Andermatt Tujetsch {{Uri-mountain-stub