Artists Karri Dieken and Michael Baum, both Black Hills State University graduates and adjunct art instructors, completed a five-day, 442-mile bike ride from Spearfish to Brookings last week.  Along the way they created a series of seismic drawings, a photographic journal and a video documentary.  Their work becomes part of a collaborative exhibit of 10 artist couples from around the United States.  Dieken and Baum are now completing their artwork to display in the Heart to Heart exhibition at the South Dakota State University Art Museum in January.