Shau Dorshid, whose name is glossed 'the master over us', is the tyrant-king who closes the age of the Tunjur and opens that of the Keira. The legend, recorded by Nachtigal and retold by later historians, makes him a ruler of impossible demands: he compels his subjects to sink wells among the high rocks and to level the summit of a mountain so that he may build his residence upon it. Worn down, his own nobility turn to his half-brother Daali and raise him to the kingship, whereupon Shau Dorshid flees into the fastness of Jebel Marra riding a white horse, or in some versions a white antelope, and vanishes, the widespread motif of the king who does not die but disappears into the sacred mountain. The tale encodes the historical passage of power from Tunjur to Fur Keira; sources differ over the peak he is said to have laboured at and over whether the vanishing mount was horse or antelope.