T. W. Rolleston,
The High Deeds of Finn and other Bardic Romances of Ancient Ireland
“ When the Milesian race invaded Ireland, and after long fighting subdued the Danaans in spite of all their enchantments and all their valour, the Danaans wrought for themselves certain charms by which they and all their possessions became invisible to mortals, and thus they continued to lead their old joyous life in the holy places of the land, and their palaces and dancing-places and folk-motes seem to the human eye to be merely a green mound or rath, or a lonely hillside, or a ruined shrine with nettles and foxgloves growing up among its broken masonry. ”
