Waitomo Caves, New Zealand (© Chris McLennan/Alamy)
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- When they said: “We\re going Down Under”…""We didn\t know it was this far under
- Some of the many caves in this system glow in the dark.""Why they glow is a story of nature being extra weird
- When some people explore caves, they call it “caving.”""But there\s another word for that pastime, and it\s more fun to say
