On the afternoon of July 19, a 29-year-old Google software engineer named Angela Lin was doing one of the things she loved most - hiking in Yosemite National Park. With her boyfriend and two friends,

But in a freak accident July 19 walking just a few steps ahead of the others on a mostly paved old stagecoach road, Angela was struck and killed by a falling tree limb. Her family believes the heavy branch — the width of a tire rim — likely killed her instantly.

Angela Lin, a 29-year-old Google engineer, was killed by a falling tree branch while hiking the popular Tuolumne Grove trail at Yosemite National Park.