in the tale of turambar it is clear that the house of mavwin was not imagined as standing near to the hills or mountains that formed the barrier between hithlum and the lands beyond : turin was told that never did orcs 'come hither deep into the land of hisilome ' , in contrast to the narn ( p. 68 ) , where 'hurin 's house stood in the south-east of dor- lomin , and the mountains were near ; nen lalaith indeed came down from a spring under the shadow of amon darthir , over whose shoulder there was a steep pass ' .