Back in August 2015, two high school students were asleep in a tent in the Upper Pines Campground when an oak limb fell, killing them both. And in 2012, a concessions worker was killed when a tree fell on his tent cabin during a windstorm.

Angela Lin, 29, was out with her boyfriend in the Tuolumne Grove area of the park on the afternoon of July 19 when the incident occurred