@CNN: 2,000 years ago, people watched as animals mysteriously died at the entrance to a grotto in modern-day Turkey that was purported to be a gateway to the underworld. Now, scientific research reveals the reason https://t.co/0rDKpPJU81 https://t.co/iR2YAQZGaE
2,000 years ago, people watched as animals mysteriously died at the entrance to a grotto in modern-day Turkey that was purported to be a gateway to the underworld. Now, scientific research reveals the reason https://t.co/0rDKpPJU81 pic.twitter.com/iR2YAQZGaE
— CNN (@CNN) March 10, 2018