DES MOINES, IOWA (October 24, 2019) — Today, Hinterland Music Festival announces its 3-day return in 2020. The 6th annual music and camping festival will take place Friday, July 31, through Sunday, August 2, at the Avenue of the Saints Amphitheater in St.= Charles, Iowa. Fans can look forward to additional details, lineup announcements, and tickets to go on sale in early 2020.