The glowworms are exclusively found in New Zealand and move into the caves for their larval stage, which lasts 6 to 12 months. The caves provide the glowworms with a place to spin silk nests and hang long strings holding beads of mucus from the ceiling without their strands getting tangled due to wind. The glowworms glow from a chemical reaction which serves as a means of attracting prey into their nests.
The glow from the worms creates a beautiful sight, almost appearing as if there are stars creating constellations inside of the cave. Visitors can go on guided tours through the caves and experience this natural wonder.