Níðhöggr - Nidhug

Níðhöggr gnaws the roots of Yggdrasill in this
ill. from a 17th-century Icelandic manuscript
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In Norse mythology, Níðhöggr is a dragon, who gnaws
at a root of the World Tree, Yggdrasill. It is sometimes
believed that the roots are trapping the beast from the
world. This root is placed over Niflheimr and Níðhöggr
gnaws it from beneath
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'The Ash Yggdrasil'
by Friedrich Wilhelm Heine (1845-1921)

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Níðhöggr a root of Yggdrasil
'The Elder or Poetic Edda; commonly known as Sæmund's Edda'.
Ed. and translated with introduction and notes
Illustrated by W.G. Collingwood (1854-1932)
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