It was supposed to be "Woodstock West" — a free concert that would draw hundreds of thousands of fans, feature some of the biggest names in rock and solidify the still-blossoming Flower Power movement.The Altamont Speedway Free Festival was also envisioned as something that would emerge as the most famous music event in Bay Area history. It did just that, but for all the wrong reasons."It was just a big mess," says Rock Scully, the longtime manager of the Grateful Dead and one of the primary organizers of the festival. "But the ball was rolling and it couldn't be stopped."Some...