sentences:  The county has extensive cave systems including Squire Boone Caverns, the Binkley Cave System (Indiana Caverns) and smaller, highly decorated caves such as Jewel Box and Devil's Graveyard caves.Harrison County is in the humid subtropical climate region of the United States along with most of Southern Indiana.Its Köppen climate classification is Dfa, meaning that it is cold, has no dry season, and has a hot summer.