Lewis and Clark celebration begins Friday Vermillion's annual Lewis and Clark celebration begins Friday with a Native American Tipi Raising Ceremony east of the DakotaDome from 10 to 11:30 a.m. The day ends with a Keel Boat Race and Builders Reception at Washington Street Arts Center, 202 Washington St., from 7 to 9 p.m. Other highlights include: Saturday, Aug. 24 � Powwow, 9 a.m.-10 p.m., adults $4, children $1; Spirit Mound Bus Tours, 10 a.m.-5 p.m., $5; Missouri River Paddle Trips 9 a.m.-2 p.m., adults $40, under 10 $10, with own kayak or canoe $20; Native American Artisans at W.H. Over Museum,9 a.m.-5 p.m.; Keel Boat Models Display at W.H. Over Museum, 9 a.m.-1 p.m.; Paddle Trip on Missouri National Recreational River, 9 a.m.-noon; Songs That Lewis & Clark Might Have Sung at W.H. Over Museum, 9:30-11 a.m.; Native American Contemporary Foods, 11 a.m.-2 p.m.;Native American Workshops at Native American Tipi Village, 10 a.m.-1 p.m.; Lewis & Clark Re-enactors west of W.H. Over Museum, 10 a.m.-10 p.m.; Free "See Vermillion Bus," 10 a.m.-4 p.m.; Prairie Interpretation at Cotton Park, 1:30-4 p.m.; Guided Bus Tours to Spirit Mound Historic Prairie from Powwow Grounds, 10 a.m.-4 p.m., $5; Wacipi Afternoon Session at Native American Tipi Village, 1-5 p.m.; Paddle Trip on the Missouri National Recreational River, 2-5 p.m.; First annual Keel Boat Race at Cotton Park, 2:30-3:30 p.m.; Native American Workshops, 5-7 p.m.; Native American Contemporary Foods, 5-8 p.m.; Meal for Native American Dancers and Families, 5-6:30 p.m.; Wacipi Evening Session, 7-10 p.m. Sunday, Aug. 25 � Hike to Spirit Mound, beginning at Cotton Park, 8 a.m.-2 p.m., $20; Guided Bus Tours to Spirit Mound from DakotaDome parking lot,1-2 p.m., $5.