SAN FRANCISCO, March 15, 2011 /PRNewswire-USNewswire/ --The fight led by naturalist John Muir a century ago continues to strengthen as hikers prepare for the third annual "Muir's March" this summer to advocate for the restoration of Hetch Hetchy Valley in Yosemite National Park. The guided treks into scenic areas -- rarely experienced by tourists -- literally and figuratively follow in Muir's footsteps, and are open to anyone who can raise at least $90.*
http://www.centredaily.com/2011/03/15/2583942/activists-to-march-across-yosemite.html