Nature & Science

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  How were these dunes formed?

  Geology and Hydrology

  The formation of the San Luis Valley, adjacent mountains, and the Great Sand Dunes; dune types; and the unique hydrology of Medano Creek.

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  What lives here?

  Animals

  Mammals, amphibians, birds, reptiles, amphibians, and insects

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  Incredible Diversity

  Plants of the Park and Preserve

  Highlights of diverse plant species plus a comprehensive plant list

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  Catch a Wave

  Medano Creek Current and Forecast Flow

  Get current and forecast conditions of Medano Creek

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  Watching the skies

  Weather Info and Forecasts

  Weather to expect each season, average highs and lows, and pinpoint forecasts

 

A researcher explores a wetland at Great Sand Dunes as part of an amphibian survey of the park.

NPS/Ola Bovin

Great Sand Dunes National Park and Preserve encourages scientific research by academic, agency, and independent research scientists. A Research Permit is required to conduct scientific research or surveys in the park and preserve.