Scientists have solved one of nature's greatest mysteries: How do big bull elks produce an eerie shriek that sounds like the Ringwraiths from The Lord of the Rings?
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Read more about how these large North American deer produce their bloodcurdling screams: http://news.nationalgeographic.com/20...
Click here to read more about elk: http://animals.nationalgeographic.com...
Quiet Alaska Suburb Moose Battle: http://on.natgeo.com/1T1TelR

Video courtesy Roland Frey
Audio courtesy Megan Wyman
Associate Producer: Jed Winer

Listen: These Elk Sound Terrifying, Like Ringwraiths | National Geographic
   • Listen: These Elk Sound Terrifying, L...  

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