The Free Cities span an area characterized by the river Rhoyne, which the local character Yandry describes as "the greatest river in the world". Its banks are the homeland of the Rhoynar, who worship the river as "Mother Rhoyne". As mapped in "A Dance with Dragons", the Rhoyne originates from the conjunction of two of its tributaries, the Upper Rhoyne and the Little Rhoyne, southeast of the ruins of Ghoyan Drohe. The headwaters of the Upper Rhoyne lie in Andalos, the homeland of the Andals between Braavos and Pentos. The Rhoyne's course runs southeast to turn due south after Dagger Lake, where river pirates hide on and around the many lake islands. The Rhoyne gains in width considerably as it gets fed by more tributaries, until it opens into the Summer Sea in a delta near the Free City of Volantis.