Watch Picnic at Hanging Rock (1979) (1975) HD Full Movie Free on SolarMovie. Watch Picnic at Hanging Rock (1979) (1975) online free. During a rural summer picnic, a few students and a teacher from an Australian girls' school vanish w...During a rural summer picnic, a few students and a teacher from an Australian girls' school vanish without a trace. Their absence frustrates and haunts the people left behind.