A thousand years ago, Gaelic monks sang and chanted inside Iceland’s vast series of caves. Recently, a group of folk singers made the trek inside one of these caves to test out the acoustics. Here’s what it sounded like.

The cave used by these singers is called Hítardalur, and it’s one of several caves that were used by the monks around the 9th Century AD. According to the creator of the video, Sigurboði Grétarsson, it took some climbing to reach the cave entrance, and its opening was quite hidden.

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These singers are engaging in a form of throat singing (also known as overtone singing) familiar to other regions, including the Inuit of North America and the Tuvan throat singers of Mongolia.

H/t Digg Video!


Contact the author at george@io9.com and @dvorsky. Top video by Sigurboði Grétarsson/YouTub

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