Critics raise concerns over traffic, environmental impact of Provo Canyon concert venue Wed, June 17, 2026 at 9:34 PM Updated Wed, June 17, 2026 at 9:39 PM Traffic at the mouth of Provo Canyon could get a whole lot busier. The Vesper Amphitheater is a proposed concert venue set to be built in what is now a gravel pit, and developers say they have big plans. (KUTV) PROVO, Utah (KUTV) — Traffic at the mouth of Provo Canyon could get a whole lot busier.