Gaint Spiders were created by accident during an experiment with Dark Magic on the top of Red Mountain in Wolfara Forest by the Dark sorcerer Mûro-dor.
He accidently created Venom-web and his larger female mate and thus started a never ending line of Giant Spider off-springs that would soon roam the lands of Ambodia.
This all happened in 2357 during the First Age (Timeline)
|The Book of Dark Spells||3 or 4||Ivar||Enemy|
Spiders and Giant Spiders also appear in the Ivar's book "An Ambodian Adventure: A Firewing's Tale" and play a large part in the last parts of the book.