'The Hill of Spies', raised by Finrod Felagund to the east of the doors of Nargothrond. 267-8
'Hill of Spies', the great earthwork raised by Finrod Felagund to the east of the Doors of Nargothrond. Called also Spyhill.
The Spyhill of Nargothrond.
A hill raised by the people of Finrod in the wide plain of Talath Dirnen, a league (approximately three miles) east of the Doors of Nargothrond above the river Narog. Over the years, trees grew on its flanks, but from its clear summit the watchers of Nargothrond could watch the lands about with the clear sight of the Elves, and so the hill got its name, Amon Ethir, meaning 'Hill of Spies'.
After the Sack of Nargothrond, the hill still stood, and it was here that Nienor encountered Glaurung the Dragon. Having plunged the land into a thick fog of dragon-reek, so that only the hill remained above the mists, he cast Nienor into a deep spell of forgetfulness, a state in which her guardian Mablung finally found her. He led her away from the hill into the north, but on the borders of Doriath she became lost, and from the Dragon's spell on Amon Ethir many evils later came.