it is quite clear , then , that artanor , afterwards called doriath ( which appears in the title to the typescript text of the tale of tinuviel , together with an earlier form dor athro , p. 41 ) , lay in the original conception m much the same relation to hisilome ( the land of shadow ( s ) , dor lomin , aryador ) as does doriath to hisilome ( hisilome ) in the silmarillion : to the south , and divided from it by a mountain-range , the lion mountains or bitter hills .