Deep in the New Zealand countryside, south of Auckland, there is a place where you can head underground into a cave that literally sparkles all around you. What is it that makes the Waitomo Caves glow so brightly?It's not what you think.

Glow in the dark bugs in the Waitomo Caves

Deep in the New Zealand countryside, south of Auckland, there is a place where you can head underground into a cave that literally sparkles all around you. What is it that makes the Waitomo Caves glow so brightly? It’s not what you think. The Waitomo Caves are one of New Zealand’s most popular and most unique attractions, and they are the only place in the world you can see the country’s famous glow worms.