Norse Creature Series: Nidhoggr.  Nidhoggr, from the darkest whirlpool of Hel, gnawed at the root of Yggdrasil, the World Tree/Tree of Life .  A powerful force of destruction and evil, Nidhoggr was instrumental to the start of Ragnarok, the "Doom of Gods."   Each 1 oz pure copper round comes with a velour pouch and is enclosed a clear protective hard plastic case.