0 sats \ 0 replies \ @BitcoinIsTheFuture 6 Jan \ on: Fun Fact Friday - Best Fun Fact Gets 10,000 Sats meta
The USA has the longest cave system in the world. Just scratch the surface of Kentucky and you’ll come across some incredible natural sites to explore. For instance, the Mammoth Cave National Park actually has the longest cave system in the world and a place that’s great to visit. I checked it out on a bike trip once. It was amazing!