The Mammoth Site Black Hills Visitor Magazine·August 25, 2017For centuries the bones lay buried until discovered by chance in 1974. While excavating for a housing development,...1-Day1/2-Day2-Day3-DayArts/MuseumsAttractionsCultureFacts (Local/State)FamilyFamily AttractionsHistoryHot SpringsItineraryLandmarksLearnMuseumsPlanSee & DoTowns/Communities·0 Comments·0