The Waitomo Glowworm Caves is a cave at Waitomo on the North Island of New Zealand. It's known for its population of a glowworm species found exclusively in New Zealand. When come across the Glowworm Grotto, the visitor will be amzaed by the twinkling glow coming from the ceiling. And when travel further into the cave by poling towards an embankment, you will also astounded by the limestone formations.