The Stone House in Nevada City, CA, is rumored to be haunted by the ghosts of Chinese laborers who died when a tunnel collapsed during the Gold Rush era, with a hidden trapdoor in a cave on the property allegedly leading to these tunnels. These tales are often highlighted during paranormal investigation tours that utilize EMF meters and EVP recorders to detect paranormal activity on the historic Gold Rush site. According to rumor, a collapse in the underground tunnels beneath The Stone House resulted in the deaths of a group of Chinese laborers. The ghosts of these workers are said to wander the grounds of The Stone House, making it a focal point for paranormal activity. The property features a cave with a trapdoor that leads to a network of tunnels, though entry is strictly forbidden. Paranormal investigators use equipment like EMF meters, MEL meters, and EVP recorders during tours to try and capture evidence of paranormal activity. The Stone House is a historic Gold Rush building, which adds to its reputation as a place where spirits might linger.