In the northwest corner of Yosemite National Park is a valley that John Muir described as “a wonderfully exact counterpart of the great Yosemite.” Since Muir's time, Hetch Hetchy Valley has changed. It was dammed in 1923 and a large blue reservoir now covers the valley. Muir opposed the dam, and fellow conservationists lost a long battle to preserve the valley. An effort... Read more.
By: Published: July 13, 2011 Last updated: January 30, 2018