The Festival Rock y Ruedas de Avándaro rock festival is held in the State of Mexico. It attracted more than 100,000 attendees during the Mexican Dirty War, a period marked by widespread political repression.

The Festival Rock y Ruedas de Avándaro was a historic Mexican rock festival held on September 11–12, 1971, on the shores of Lake Avándaro near the Avándaro Golf Club, in a hamlet called Tenantongo, near the town of Valle de Bravo in the central State of Mexico. The festival, organized by brothers…