Rhûn

Rhûn
J. R. R. Tolkien's legendarium location
Other name(s)	the East, the Eastlands
Type	Vast lands of the further East of Middle-earth
Location	East of Wilderland and Mordor

In the fictional world of Middle-earth created by J. R. R. Tolkien, Rhûn (IPA: [r̥uːːn]) was a large region of eastern Middle-earth. Rhûn (which is also the Elvish word for "east") was the name used for all lands lying east of Wilderland, around and beyond the inland Sea of Rhûn, from where came many attacks on Gondor and its allies during the Third Age of Middle-earth.

Almost nothing can be known of the lands beyond the Sea of Rhûn from Tolkien's written work, though it is vaguely described in The Fellowship of the Ring as a realm of "wide uncharted lands, nameless plains, and forests unexplored". The wizard Gandalf had never explored these lands, and though Aragorn is said to have travelled to them, there is no report of what he did while there.

Rhûn's ancient geography can be gleaned a little from The Silmarillion; throughout most of the First Age the vast Sea of Helcar was located there and beyond that the Orocarni ('red mountains'). Somewhere in the east, too, lay Cuiviénen and Hildórien, where Elves and Men first awoke: all the Children of Ilúvatar could trace their ancestries back to the eastward regions of Middle-earth.

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Wikipedia