Kentucky is a state that’s known for its superlative caves. Between housing the largest underground cave system in the world *and* a mega cavern that boasts the world’s only fully underground zip line, a world of wonder awaits beneath the rolling hills and city streets of the Bluegrass State. And the fun doesn’t stop there, either; each winter, the Louisville Mega Cavern transforms into a veritable winter wonderland during Lights Under Louisville, an epic underground light display in Kentucky. This is one only-in-Kentucky holiday adventure you won’t want to miss!


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