Even in the reduced scale of the map the desert seemed vast. Its mere representation, as earlier indicated, covered several square feet of the floor. It was roughly in the shape of a gigantic, lengthy trapezoid, with eastward leaning sides. At its northwestern corner lay Tor. West of Tor, on the Lower Fayeen, a sluggish, meandering tributary, like the Upper Fayeen, to the Cartius, lay the river port of Kasra, known for its export of salt....
- Tribesmen of Gor, pag 33 -

The Wagon Peoples claimed the southern prairies of Gor, from gleaming Thassa and the mountains of Ta-Thassa to the southern foothills of the Voltai Range itself, that reared in the crust of Gor like the backbone of a planet. On the north they claimed lands even to the rush-grown banks of the Cartius, a broad, swift flowing tributary feeding into the incomparable Vosk. The land between the Cartius and the Vosk had once been within the borders of the claimed empire of Ar, but not even Marlenus, Ubar of Ubars, when master of luxurious, glorious Ar, had flown his tarnsmen south of the Cartius.
- Nomads of Gor pag 2 -