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				Stupid symestreems!
			 
 
			
			OK, I have decided to change the question, because of the possibility that something in that vast and often self-contradictory Tolkien Legendarium is making the answer to this puzzle wrong.
 I've taken out Rivendell and added two places. The OPO is still the same as before, so continue with the trains of thought you were on before. New list:
 
 Minas Tirith
 Doriath
 Lothlorien
 Gondolin
 Nan Elmoth
 the Fens of Sirion
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