New Almaden (Quicksilver) mining area folklore

The New Almaden Quicksilver mining district and its Casa Grande building in southern San Jose have long-standing local legends of ghostly sightings tied to the area's 19th-century mining history and mining accidents. Visitors and local storytellers have recounted hearing phantom voices, seeing apparitions, and experiencing other unexplained phenomena around the old mine sites and museum. These accounts are part of regional folklore and have been referenced in local histories and tours rather than confirmed by scientific investigation.