28 May   Golf anyone?  28 May
  Haute Route  
End of the Haute Route   30 May  30 May 
 
 
 
 
 
 
River out of Zermatt
29 May 2021
River out of Zermatt    29 May 2021
  Haute Route   
 
 
 
 
 
Matter Vispa river  
 
 
 
 
Matter Vispa river  
 
 
 
 
Matter Vispa river  
 
 
 

According to this: https://en.wikipedia.org/wiki/Gornergrat much of the water ends up in the Grande Dixence dam.

Located in the Pennine Alps, the Matter Valley is drained by the Matter Vispa, a tributary of the Rhone. The valley itself ends at Stalden where it meets the Saas Valley. The resulting Visp Valley continues for a few kilometres until it reaches the town of Visp on the young river Rhone. The valley starts between the high summits south of Zermatt (Monte Rosa, Matterhorn) on the border with Italy. The upper side is glaciated, the second largest glacier of the Alps, the Gorner Glacier lies at the foot of Monte Rosa (4,634 m), while the Zmutt Glacier lies at the foot of the Matterhorn (4,478 m). Around the village of Randa are located the Weisshorn (4,505 m) and the Dom (4,545 m). The difference of height between the talweg and the summits on both side reaches over 3 km. The total length of the valley is about 40 km. https://en.wikipedia.org/wiki/Mattertal

Sourced in the mountain basin that surrounds Zermatt, this river flows through town then down through the valley that, if you remember, is overlooked by Oh Wow point.