Now 76 and living in Oregon, Mountain Girl has gave us an exclusive look at her memoir.
Altamont, the free concert that Mountain Girl and Jerry Garcia helped organized, was meant to revive the spirit of the Sixties.
Today, 60 years since she took that ride with Neal Cassady, Mountain Girl is still forging her own path.
Before I leave Kesey's farm, Mountain Girl and I walk outside to the old brown barn where Furthur now rests.
But for Mountain Girl, it lives forever, an emblem of everything her generation believed in, and all that they achieved.