http://www.nytimes.com/2014/08/10/travel/restoring-acadias-trails.html?_r=0
“For decades, a small cult of hikers mapped and walked the lost trails of Acadia[, Maine], scouring the softwood for clearings, a cairn or granite steps covered in moss. Nature takes quickly, and many were completely lost. But grant money rebuilds even faster, and in 1998, a local organization called Friends of Acadia saved the trail system with the Acadia Trails Forever campaign, which raised $9 million in private donations to go with $4 million in park entry fees. This initiated the rehabilitation of the trails.”