Scientists Say They Know What's Causing 'Fairy Rings'
Danish scientists say they've finally figured out what's causing ocean-floor crop circles known as fairy rings.By Collin Ruane | February 2, 2014
They're not underwater craters, and they're definitely not from aliens. That's according to Danish scientists who say they've finally figured what's causing ocean-floor crop circles known as fairy rings.
According to LiveScience, these mysterious circles were noticed off the coast of Denmark. The unusual dark rings are basically circles of grass around a patch of dirt. (Via LiveScience)
Tourists in Denmark first took pictures of the rings back in 2008. The International Business Times points out many on the Internet started trying to come up with explanations for why they were there after pictures surfaced.