• 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.
 


 
Green River Ferry and Flowering Flame logo

Did You Know?

Eyeless cave fish

Creatures that spend their entire lives in Mammoth Cave adapt to the dark world. Some types of cave fish, for example, do not grow eyes – supporting these extra unnecessary organs would consume precious energy in their nutrient-poor environment.