Waitomo Cave
This unique, 30-million-year-old limestone cave in New Zealand is famous for one, obvious reason: in the darkness, the cave’s ceiling is illuminated with the eerie blue-white glow of Arachnocampa luminosa—the glowworm. Actually the larval and imago stages of a gnat, the worm’s glow turns Waitomo Cave into a starry sky underground. There’s nothing quite like it.
