Sign of the Shadow

Sign of the Shadow is a Shrine Quest in The Legend of Zelda: Breath of the Wild. The quest is obtained by speaking to the Rito minstrel Kass atop Gerudo Tower. The trial is completed by firing an arrow towards the sun from an ancient platform directly southeast of the tower while the tower's shadow is over the ridge (earliest possible time for this is 3 PM in game). Once this is done, Sasa Kai Shrine will emerge from the ground near the platform.