• The Historic Entrance of Mammoth Cave

    Mammoth Cave

    National Park Kentucky

Clean Cities National Parks Initiative

Clean Cities program logo
Clean Cities partners with the National Park Service through the Clean Cities National Parks Initiative to support transportation projects that educate park visitors on the benefits of reducing dependence on petroleum, cutting greenhouse gases, and easing traffic congestion. This initiative complements the NPS Climate Friendly Parks program by demonstrating the environmental benefits of reducing petroleum use.
 

 

 
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  • Media Release Media Release

    DOE-Clean Cities brings new alternative-fuel vehicles to Mammoth Cave NP Read More

  • Clean Fuels Partners Clean Fuels Partners

    Discover more about our partners in making the National Parks even greener. Read More

  • Clean Fuels Images Clean Fuels Images

    See the Clean Cities National Parks Initiative at work. Read More

Did You Know?

Tuberculosis Hut in Mammoth Cave

In 1841, cave owner Dr. John Croghan believed the cave air might cure his patients suffering from tuberculosis. He brought 16 patients into Mammoth Cave that winter and housed them in stone and wood huts. After some perished, they left the cave, for of course the cave air offered no cure.