those were the days...During 1969/1970 I lived in Heilbronn, near Hockenheimring, and visited often. Saw 1970 German Grand Prix, but stadiums and course different, then.
Stadium included dirt mound, where concrete stands are today.
Course included long fast straights through forest, instead of chicanes, barriers, clearings, etc.
People would sit on fences, in trees, to watch.
those were the days...