Southern Maryland is a region located in the state of Maryland, bordered by the Potomac River to the west and the Chesapeake Bay to the east. It includes three main counties: Calvert County, Charles County, and St. Mary's County. The area is known for its rich history, including the early colonial settlements and the presence of the Patuxent River Naval Air Station. The region features a mix of rural landscapes, small towns, and waterfront communities. Southern Maryland is also recognized for its agricultural activities, particularly tobacco farming, and offers various recreational opportunities, such as fishing, boating, and hiking in its parks and natural reserves.