The Grande Dixence dam in Lower Valais is closed to visitors due to a rockfall last weekend. The nearby hotel also had to ...

Aerial view of the Grande Dixence dam in the canton of Valais, Switzerland. Credit: Jérémy Toma / Wikimedia Commons That’s why, as early as 1922, the company Energie Ouest Suisse saw the site’s ...

Grande Dixence dam: 285 metres high and 700 metres long. Location: 2,365 metres above sea level. Weight: 15 million tons. Holding capacity: 385 million cubic metres of water.

(The tallest such dam now is the 935-foot Grande Dixence Dam in Switzerland. In the U.S., it's the Dworshak Dam in Idaho.) The Tallassee Power Company, later called Tapoco, ...