The World’s Most Amazing Swimming Holes Technically, a “swimming hole” is any deep place for swimming in a stream, lake or river. But for this post the editors decided on a more ridged set of criteria: First, we considered only swimming spots that were inside some sort of hole in the earth. Second, we decided to count only naturally occurring swimming holes. Finally, we only considered swimming holes that offered temperate waters.
Nature never ceases to amaze us! The Devetashka Cave, Bulgaria, is said to be inhabited in the Early Paleolithic and now it has become a protected national landmark. Its quirky structure and lush vegetation oly need dinosaurs to be a perfect spot for a Jurassic World experience!