Glow Worm Caves are natural caves that are home to bioluminescent larvae of the glow worm species, primarily found in New Zealand and Australia. These caves create a stunning display of blue-green lights, as the glow worms emit light to attract prey. The caves are often formed through limestone erosion, creating unique rock formations and underground rivers. Visitors to Glow Worm Caves can take guided tours to experience the enchanting glow and learn about the life cycle of the glow worms. The caves also provide a habitat for various other cave-dwelling species, making them an important ecological site.