The Pella Convention and Visitors Bureau and the Knoxville Chamber of Commerce are hard at work on this year’s Lake Red Rock Balloon Festival. Pella Convention and Visitors Bureau Director Jill Vandevoort tells KNIA/KRLS News that last year’s event was a big hit, and already the activities they have planned this year will offer a wide variety of things to do. She also notes that there are only two weeks left for businesses to sponsor the event.