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  2. List of archaeological sites in South Dakota - Wikipedia

    en.wikipedia.org/wiki/List_of_archaeological...

    According to the South Dakota State Historical Society's Archaeological Research Center, over 26,000 archaeological sites have been recorded in the U.S. state of South Dakota. [ 1 ] This list is broken down by county and encompasses sites across all of what is now South Dakota.

  3. Geology of South Dakota - Wikipedia

    en.wikipedia.org/wiki/Geology_of_South_Dakota

    Southwest of Lead, South Dakota, there is still an active open pit gold mine, run by Goldcorp. [9] South Dakota has oil and gas production in the Williston Basin in the northwest, although it produces only one percent of the US total, primarily from traditional vertical wells. One hundred wells produce 1.6 million gallons of oil annually.

  4. Stalactite - Wikipedia

    en.wikipedia.org/wiki/Stalactite

    Image showing the six most common speleothems with labels. Enlarge to view labels. A stalactite (UK: / ˈ s t æ l ə k ˌ t aɪ t /, US: / s t ə ˈ l æ k t aɪ t /; from Ancient Greek σταλακτός (stalaktós) 'dripping', from σταλάσσειν (stalássein) 'to drip') [1] is a mineral formation that hangs from the ceiling of caves, hot springs, or man-made structures such as ...

  5. List of National Natural Landmarks in South Dakota - Wikipedia

    en.wikipedia.org/wiki/List_of_National_Natural...

    Map all coordinates using OpenStreetMap. Download coordinates as: KML; ... South Dakota National Natural Landmarks (clickable map) Name Image Date Location County

  6. Geography of South Dakota - Wikipedia

    en.wikipedia.org/wiki/Geography_of_South_Dakota

    South Dakota is the 17th-largest state in the country. South Dakota has a humid continental climate in the east and the Black Hills, and a semi-arid climate in the west outside of the Black Hills, featuring four very distinct seasons, and the ecology of the state features plant and animal species typical of a North American temperate grassland ...

  7. List of National Historic Landmarks in South Dakota - Wikipedia

    en.wikipedia.org/wiki/List_of_National_Historic...

    There are 16 National Historic Landmarks (NHLs) in South Dakota, one of which is shared with Iowa and listed by the National Park Service as primarily in that state. They have been designated in 13 of South Dakota's 66 counties. Most are along rivers, long the chief areas of human settlement in this arid place.

  8. Category:Archaeological sites in South Dakota - Wikipedia

    en.wikipedia.org/wiki/Category:Archaeological...

    This is a listing of sites of archaeological interest in the state of South Dakota, in the United States Wikimedia Commons has media related to Archaeological sites in South Dakota . Subcategories

  9. Rushmore Cave - Wikipedia

    en.wikipedia.org/wiki/Rushmore_Cave

    It is the ninth longest cave in South Dakota. It measures a distance of 3,652.6 feet (1,113.3 m). It measures a distance of 3,652.6 feet (1,113.3 m). It was discovered in 1876 when a log flume that supplied water to mining operations in town of Hayward broke and spilled onto the side of the hill.