Dor-en-Ernil, also known as the Land of the Prince, was one of Gondor's most southerly coastal regions. It was located north of Harondor, and was often used as a road for the armies of Gondor and Dol Amroth. The name is a presumable reference to the Princes of Dol Amroth, subjects to the Kings of Gondor, who ruled the lands from the Ringló to the Gilrain. Besides that, the lands of Dor-en-Ernil had their own lords. The lands of Dor-en-Ernil were the ones between an unspecified mountainous area and the Gilrain, although Christopher Tolkien suspects the regions Belfalas and the Land of the Prince to be the same. The borders of this region were not specified by Tolkien himself.

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