Wikimedia Commons, Public Domain

Highway 91 goes north from Marion, Kentucky to the Ohio River, where there's a small ferry crossing to Cave-In-Rock, Illinois. That limestone cave, now a feature of a small state park along the banks of the river, was said to have harbored vicious river pirates at the turn of the 18th and 19th centuries, including the infamous Harpe Brothers. Dr. Mark Wagner, interim director and staff archeologist of Southern Illinois Carbondale's Center for Archeological Investigations, says that historical record only places one particular pirate there and his name was Samuel Mason. Kate Lochte speaks with Dr. Wagner on Sounds Good to learn more about the fearsome figure who prowled the Ohio and Mississippi Rivers.

Poverty Point State Historic Site, Facebook

Tracy Ross speaks with Anthony Ortmann, Murray State Archaeologist, contributing to new thinking about the prehistoric earthworks at Poverty Point. These were built about 3500 years ago on the edge of the Mississippi floodplain in northeastern Louisiana. One of the mounds stands 72-feet high and has a base almost the size of 10 football fields. They speak about how Anthony came to work at Poverty Point and why the site is historically significant, also, new findings and research about the site. Click here for more about Poverty Point and how to visit.