It certainly sounds like it should have been written by John Williams--it's his style,I feel.Then again,it is very reminiscent of the type of incidental music used in epics like Lord of the Rings,especially as it features what I call "grunting vocals" as emphases during certain portions ; it's probably called "Visigoths From Hades In The Valley Of The Snow-Morons" - ( I thought I detected a subtle nuance of Prokoviev-like troika-bells in there ).
                  But of course,as usual,I could be wrong !