Family found dead on hiking trail near Yosemite. Authorities don't know what happened

Authorities in Mariposa County, California, are trying to determine why a family of three and their dog died on a remote hiking trail in the Sierra National Forest near Yosemite National Park.

source https://www.cnn.com/2021/08/19/us/yosemite-family-death-trnd/index.html