Unusual Caves Around the World

Waitomo, New Zealand is famous for one thing. Every year, heaps upon heaps of travelers come here to see the infamous glow worms that line the ceilings of the nearby caves. The glow worms emit a phosphorescent glow that shines from the roofs of the caves like a starry night.


The interesting thing about the glow worms is that they aren’t really glow worms. They’re fly larvae. And what glows? Well, that’s their waste and snot. The larva glow to attract prey into its threads by making the prey believe they are outdoors as the roof of a cave looks much like a starry night. Hungry larva glow brighter than ones that have just eaten. There are a couple of ways to see the glow worms. There’s the three hour black water tubing trip, the five hour trip that includes abseiling and climbing, or, if you like it easy, a boat.

Cueva de Arpea, Spain

Autosave-File vom d-lab2/3 der AgfaPhoto GmbH

Cueva de Arpea is located below the twisted rock layers in Aezkoa valley in northern Spain. That area is home to some truly amazing caves.


The cave is called in french “caverne d’harpea”. It’s believed to have been used as a refuge by ancient shepherds since old times.

The views and opinions expressed in this article are those of the authors/source and do not necessarily reflect the position of CSGLOBE or its staff.

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