Angela Lin, a 29-year-old Google software engineer, died after she was hit on the head by a falling tree branch at Yosemite National Park on Saturday, July 19, while hiking with her boyfriend and two friends.

According to reporting by San Francisco Gate, Angela Lin was hiking with her boyfriend David Hua, and two friends in Tuolumne Grove on July 19 when the tragedy occurred. Hua says the group heard a loud cracking sound followed by several falling branches just seconds later.

Tuolumne Grove is known for its nearly 3 miles of trails through majestic forests and for a tunnel carved through one of its giant trees. Falling branch deaths are uncommon but not unheard-of.