The Knowledge of the Forever Time (2015) 2015, Documentary, History, Mystery, United States The Knowledge of the Forever Time (2015) Duration: 56M Description: The film opens with the howling voices of the last 50,000 years, and believe it or not, their voices are actually screams of fear and desperation. Every cave painting of a cow or horse is actually an encrypted prehistoric message,….. Trailer ↗ United States 2015 Documentary History Mystery