Last Chance Community Powwow Fri 9/28 - Sun 9/30 Lewis & Clark County Fairgrounds Exhibit Hall Scroll to bottom of post for map. Loading Map.... Lewis & Clark County Fairgrounds Exhibit Hall98 W Custer AveHelena, MT 59602 Need directions? Visit Google Maps. Need lodging? Use Booking.com. Want cash back? Get DO$H. 46.620680440449924 -112.05648523914795 Add a Comment Cancel replyYou must be logged in to post a comment.