1800 US-18 BYP P.O. Box: 692
Hot Springs, SD 57747 United States
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Mammoth Site Of Hot Springs South Dakota Inc


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…we can provide you with more information to fit your charitable plans for the future.
Please contact: Diana Turner
Accounting and Fundraising
(605) 745-6017 mammothdev@mammothsite.org or
Joe Muller
Business Manager
(605) 745-6017 joem@mammothsite.org

Support the Mammoth Site


The Mammoth Site is truly a gift from nature; our inheritance held in trust for 26,000 years. We would diminish ourselves if we failed to perceive the historical and scientific value of this discovery. As a non-profit 501 (c)(3) organization, our preservation, education and research programs are primarily funded through admission and your donation.

The Mammoth Site Major Gifts Campaign

The Mammoth Site has entered into a Major Gifts Campaign to raise 2.2 Million dollars.

An investment in the Mammoth Site is an investment in the future of the Black Hills and its scientific and economic growth. Increasingly, the Mammoth Site is called upon to provide educational resources, materials, presentations and support for science education in schools and colleges throughout the world.

The Mammoth Site is recognized as an important scientific asset in the field of paleontology. Likewise, the Mammoth Site introduces visitors from around the world to the excitement of scientific discovery and research.

It is crutial for our nation’s future to increase the understanding and participation of learners in all aspects of science.

Intitiative One

Education & Research – $200,000

Intiative Two

The Learning Center for Science & Culture – $1.6 Million

Intiative Three

The Mammoth Site Endowment – $400,000

These goals will allow us to:

  • Continue to serve as a world class science center.
  • Enhance educational opportunities with emphasis on new audiences
  • Increase visibility of the Mammoth Site
  • Plan for the expansion of the Mammoth Site to accomodate projected growth

Find out more…
Ask for a Case Statement
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The Charles E. Clay Legacy Campaign


People who are “visionary” don’t come around very often – they work hard to benefit others and are unselfish in their ways. Eddie Clay defines that description and has made an enormous impact on South Dakota throughout his life.

           Eddie has served over 30 years on the Mammoth Site Board of Directors from 1982 – current. He served as President, from 1984 to 2008. One of Eddie’s visions for the Mammoth Site has always been to see it continue to serve as a world-class science center.

Honoring Eddie’s Legacy of Service…

In honor of this extraordinary person, the Mammoth Site is establishing the Charles E. Clay Legacy. Our goal is to raise $850,000 by February 28, 2013.

Our invitation to you…
Please join us in creating the Charles E. Clay Legacy by making a significant gift in honor of Eddie’s lifetime of service. Your tax-deductible legacy gift will be used as unrestricted funds for the continued support of the Mammoth Site.

How you can make your gift…
Gifts and pledges can be made online here.You can download a Charles E. Clay Legacy Pledge Form here. Please consider our pledge opportunities of 3 to 5 year installments.

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The Annual Fund represents unrestricted annual operating support from individuals and businesses. It provides important financial support above and beyond those funds derived from membership and admission fees. Money from the Annual Fund is used where it is needed most – to supplement day-to-day operations. Your support allows us to advance our mission and broaden our reach beyond the local community.

Annual Fund donors are among the Mammoth Site’s most dedicated and important contributors, won’t you join this group today?

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“A gift to last in perpetuity,” that is the intent of an endowment donation. Currently, the Mammoth Site has a General Endowment Fund with the annual investment return used for day-to-day operations. Creation of additional funds to support education, science/research, and staffing will be considered as funds and/or as donor interest allows. You can establish an endowed fund by making an outright gift, through a pledge payable over a number of years, or through a planned gift.

Make an endowment gift to the Mammoth Site and see your gift keep on giving!

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The future of the Mammoth Site is as important as the present. Help the Mammoth Site prepare for the future by making a planned gift or bequest. Planned gifts – annuities, charitable trusts, real estate, life insurance or naming of the Mammoth Site in your will – all assist the site in achieving our financial goals.

Creating a planned gift now allows you to experience the benefits for the Mammoth Site. Please consult your attorney or tax advisor.

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Many employers sponsor matching gift programs and will match any charitable contributions made by their employees. Some companies even match gifts made by retirees and/or spouses.

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Donate now!Donate now!Donate now!Donate now!


Mammoth Projects

Theater/Lecture Hall:State of the art!
Buy a Brick
Internship Appeal: The Interns are Coming!!!
Mapping Kiosk: Pick a bone, any bone!!!

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Wish List

Building and Grounds
Front Desk/Gift Shop

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Your pledge will ensure that our vision to share scientific knowledge with the public will be achieved!

Our Visitors Say It Best…

leaf“The Mammoth Site is not just a window into the past—it’s as close to being a true time machine as you’ll find, with some of the best ice-age fossils on the planet on permanent display.”
Ross MacPhee,
Division of Vertebrate Zoology,
American Museum of Natural History, New York City

leaf“The students examined fossil and non-fossil examples then made their own fossil imprints. The students had great fun and loved the activity.”
Savage Branch Library
Howard County, MD

leaf“We used the Kindergarten through 5th grade kits for an evening program and presentation. The parents were very impressed and the teachers loved the completeness of the lesson plans. They were easy to work with also during class time.”
Meeker Elementary School District,
Meeker, CO