Black Star Canyon in the Santa Ana Mountains above Irvine, California, was the site of a violent clash in the 1830s between fur trappers and a band of Native Americans. William Wolfskill and a group of American trappers attacked a Tongva village, killing many inhabitants in what became known as the Black Star Canyon Massacre. The canyon has since become one of Southern California's most notorious haunted locations. Hikers and campers report hearing screams and chanting echoing through the narrow gorge after dark, seeing flickering lights in areas with no roads or structures, and encountering an overwhelming sense of dread that compels them to leave. Some visitors report seeing a spectral woman in white near the creek bed, while others describe shadowy figures moving through the trees. An abandoned homestead deeper in the canyon adds to the eerie atmosphere — squatters who attempted to occupy it reportedly fled after experiencing objects being thrown by unseen forces. The canyon is also associated with multiple reports of unusual animal behavior and unexplained sounds. Local authorities have responded to numerous calls from frightened hikers over the years.