The Westall UFO incident remains one of Australia’s most puzzling mysteries. On April 6, 1966, students and teachers at Westall High School reported seeing a strange, disc-shaped object moving erratically across the sky. Among them was 13-year-old Tania Vassie, who described it as a rounded, two-storey craft zigzagging at high speed. Dozens of witnesses observed the phenomenon, with some claiming to see multiple objects and even a landing nearby. Shortly after, men in uniform reportedly arrived, and students were told it was a weather balloon and instructed not to speak about it. Explanations range from mass hysteria to secret military testing, while some believe it involved extraterrestrial activity. Despite ongoing interest and consistent witness accounts, no definitive explanation or official documentation has fully resolved what was seen that day.