Hi Tolkien, like NitroLiq & Kurt said... it was done by Weta... If you can get the special edition of LOTR 1 on DVD, I would suggest you to do it... much extra Background material... here is a site from Weta... --> https://www.wetafx.co.nz/workshop/pastprojects/lotr.htm some of them is also coming to the 3D Festival in Copenhagen in May... --> https://www.3dfestival.com/event_special.php regards Strarup