Lantern in Spear Tower, Sunspear
Tyene Sand’s tower cell, Sunspear
After the death of their father by Ser Gregor Clegane, the oldest of the Sand Snakes, Obara, Nymeria and Tyene, began to pressure Doran Martell to declare war in retribution, and became involved in various plots to effect the same, including agitating the Dornish populace. Concerned that their efforts would undermine his own schemes, Prince Doran had the oldest ones confined to tower cells in Sunspear, with the exception of Sarella, who was in Oldtown. The youngest four, however, were isolated in the Water Gardens with their mother, to prevent them from being used in the plots of others and drawing Dorne into a war (x).