Tomorrow is the beginning of Minnesota Archaeology Week and state officials have scheduled a series of activities designed to promote interest in Minnesota archaeology. Those activities include demonstrations on how to make stone tools, lessons in early ceramic techniques, and --next week-- a talk on shipwrecks. Barto Arnold, from the Institute of Nautical Archaeology at Texas A&M University, is coming to the Twin Cities to discuss underwater investigations of three shipwrecks, and their links to Minnesota history. One of the shipwrecks he has explored is La Belle, a 17th century French ship discovered on the Gulf Coast near present day Corpus Christi, Texas. The ship was captained by the explorer La Salle, who also travelled down the Mississippi in a canoe. Dr. Arnold joins us now.