the passage describing the route of the orcs who captured turin ( p. 77 ) seems to give further support to the idea that 'the mountains fencing hisilome from the lands beyond were continuous with those above angband ' ( p. 6z ) ; for it is said here that the orcs 'followed ever the line of dark hills toward those regions where they rise high and gloomy and their heads are shrouded in black vapours ' , and 'there are they called angorodin or the iron mountains , for beneath the roots of their northernmost fastnesses lies angband ' .