The subterranean Waitomo Caves are starring in a new, big budget documentary series.
One Strange Rock by National Geographic has travelled the world in search of the oddest natural phenomenon on Earth.
Part eight of a ten part series, the episode has been titled "Alien."
The show will be centring around the otherworldly glow worms found in the it's easy to see why.
The larvae hang from a network of silk and mucus, illuminating the cave ceilings with their light-emitting back ends. The effect is an array of spectacular constellations which have been a draw to fateful insects and tourists alike.