Audio Postcard: 2022 Walnut Valley Festival KMUW Published September 15, 2022 at 3:51 PM CDT Facebook Twitter LinkedIn Email Listen • 2:28 Jonathan Huber / KMUW Camp Fork'n'Folk picks music late into the night on Monday evening at the 50th Walnut Valley Festival in Winfield The 50th Walnut Valley Festival kicks off today in Winfield. KMUW's Jonathan Huber explored the bustling Pecan Grove earlier this week and sent this audio postcard.