Today I wrote a postcard to a fellow Postcrosser in the Czech Republic. =) The postcard depicts the underground boat tour at Lost River Cave in Bowling Green, Kentucky. I wrote about how Lost River Cave is the one and only underground boat tour in Kentucky, and while the temperature in Kentucky varies EXTREMELY throughout the year, the inside of the cave is always a steady 57 degrees F (or about 14 degrees C). It cost $1.10 (USD) to send.

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