She had been the girl who had brought to the house of Samos the message of the scytale. The scytale had been a marked hair ribbon. Wrapped about the shaft of a spear, thus aligning the marks, the message had appeared. It had been to me, from Zarendargar, or Half-Ear, a war general of the Kurii, inviting me to meet him at the �world�s end.� My speculation that this referred to the pole of the Gorean northern hemisphere had proved correct. I had met Half-Ear there, in a vast northern complex, an enormous supply depot intended to arm and fuel, and otherwise logistically support, the projected invasion of Gor, the Counter-Earth. I think it likely that Half-Ear perished in the destruction of the complex. The body, however, was never recovered.
Explorers of Gor, page 11

Samos, of course, knew as well as I the limitations of the first knowledge. he knew, as well as I, that Gor was spheriod. I did not know why men did not traverse the seas far waest of Cos and Tyros. Telima, too, of course, having been educated through the second knowledge in the house of Samos, knew that �world�s end� was, to the educated Gorean, a figurative expression. Yet, in a sense, the Gorean world did end there, as it also, in a sense, eneded with the Voltai ranges to the east. They were the borders, on the east and west, of known Gor. To the far south and north, there was, as far as men knew, only the winds and the snows, driven back and forth, across the bleak ice.
Raiders of Gor, page 312

Others said, in stories reminiscent of Earth, and which had doubtless there had their origin, that the world�s end was protected by clashing rocks and monsters, and by mountains that could pull the nails from ships. Others said, similarly, that the end of the world was sheer, and that a ship might there plunge over the edge, to fall tumbling for days through emptiness until fierce winds broke it apart and the wreckage was lifted up to the bottom of the sea. In the maelstroms south and west of Tyros shattered planking was sometimes found. It was said that some of this was from ships which had sought the world�s end.
Beasts of Gor, page 28

A ship had been prepared, set to sail to the world�s end. It had been built by Tersites, the half-blind, mad shipwright, long scorned on Gor. Samos regarded him a genius. I knew him for a madman; whether he might be, too, a genius, I did not know. It was an unusual ship. It was deep-keeled and square-rigged, as most Gorean ships are not. Though it was a ramship it carried a foremast. It possessed great oars, which must be handled by several men, rather than one man to an oar. Instead of two side-hung rudders, or oars, it carried a single oar, slung at the vessel�s sternpost. Its ram was carried high, out of the water. It would make its strike not below, but at the waterline. It was a laughing stock in the arsenal at Port Kar, but Tersites paid his critics no attention. He worked assiduously, eating little, sleeping at the side of the ship, supervising each small detail in the great structure. It was said the deep keel would slow the ship; that the two masts would take too long to remove in the case of naval combat; that so large an oar would constitute an impractical lever, that it could not be grasped by a man, that the oarsmen could not all sit during the stroke, that if more than one man controlled an oar some would shirk their work. Why one rudder rather than two? With lateen rigging one could sail closer to the wind. Of what use is a ram which makes its strikes so high?
I was not a shipwright, but I was a captain. It seemed to me such a ship would be too heavy to manage well, that it would be clumsy and slow, that it might be better fitted to cargo service when protected in a convoy than entrusted to confront, elude or brave the lean, lateen-rigged wolves of gleaming Thassa, hungry for the cargoes of the ineffectual and weak. Were I to hunt the world�s end I would prefer to do so with the Dorna or the Tesephone, a sleep ship whose moods and gifts I well knew. Yet the ship of Tersites was strong. It loomed high and awesome, mighty with its strakes, proud with its uprearing prow, facing the sea canal. Standing beside the ship, on the ground, looking up at that high prow, so far above me, it seemed sometime that such a ship, if any, might embark upon that threatening, perhaps impossible voyage to the ,world�s end. Tersites had chosen to build the ship in such a way that its prow faced west; it pointed thus not only to the sea canal; it pointed also between Cos and Tyros; it pointed toward the world�s end.
Beasts of Gor, page 28