Just under our feet lies a mysterious world that remains largely unexplored. Cave systems are one of the last frontiers on earth and scientists are racing to learn more about them.
They form over time and grow more beautiful as the years pass, always in a constant state of change.
Many cave systems are so large they have completely self-contained ecosystems that have formed within them. Underground rivers and lakes make up the majority of the fresh water on earth and contain all sorts of amazing wildlife, all of which are blind without light from the sun.
This dark and mysterious place holds wonders that are hard to comprehend. These photos offer a beautiful glimpse into a subterranean world that few will ever see first hand.
1. Marble Caves, Chile.
Want to be happier in just 5 minutes a day? Sign up for the Happiness Subscription and get the #1 daily good news email, expert health & wellness tips, and more! Learn more.