The dark clouds are above us as we approached the Mammoth Cave visitor center. The threat of rain is hovering over us but fear not – Most of this park is indoors, and naturally air-conditioned!
Fortunately, we did our research ahead and booked the tour before we got there. Nearly all tours were booked for the morning with only a few left in the afternoon. While it was a warm summer day, most visitors carried a sweatshirt with them. It will be important in a few minutes.
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