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Alhambra Hills Open Space Committee volunteer Jamie Fox points to photographs and maps of the Alhambra Hills open space on a shelf while speaking to a group of people attending a meeting with Robert Hanna the great-great-grandson of John Muir while at the Briones Regional Park Alhambra Creek Staging Area in Martinez, Calif., on Saturday, April 12, 2014. The Alhambra Hills Open Space Committee is asking Martinez city leaders to protect the land, trees and ridgelines from being developed into 110 homesites. The group is trying to capitalize on the discovery of Muir's land map from 1894, which proves the historical ridgeline was not only walked and enjoyed by Muir for inspiration, but that his name was the sole owner. (Jose Carlos Fajardo/Bay Area News Group)

Living history

Robert Hanna, left, and above, right, the great-great-grandson of naturalist John Muir, speaks at a Saturday gathering hosted by the Alhambra Hills Open Space Committee on land his famous ancestor once owned. The group is trying to acquire the property as open space for perpetuity. Interested residents met at Briones Regional Park to urge city leaders to protect the land, trees and ridgeline. Hanna, of Roseville, above, discusses Muir's history with, from left, Ron Kline, of Martinez; Dennis Fox, of Auburn; and Greg Travers, of Martinez. Below left, committee volunteer Jamie Fox points to photographs and maps of the site, which has been approved for development.

The committee is trying to capitalize on the discovery of Muir's land map from 1894, which indicates he was the sole owner of the property.

However, the site was approved for development in 1990, and after a downsized project, rotected habitat off-site, and removal of fewer trees -- but still with a planned removal of 484 trees -- the 112-custom home project was finally back on track in 2011, with the developer agreeing to delay grading of the land until April 2014. Hanna, of Roseville, above, discusses Muir's history with, from left, Ron Kline, of Martinez; Dennis Fox, of Auburn; and Greg Travers, of Martinez. Below, committee volunteer Jamie Fox points to photographs and maps of site.