Toh Yahsa Shrine is a Shrine from The Legend of Zelda: Breath of the Wild. It is located on Thundra Plateau in Hyrule Ridge. It can only be accessed upon the completion of the "Trial of Thunder" Shrine Quest, at which point it rises from the ground in the middle of Thundra Plateau. The Sheikah Monk Toh Yahsa offers a trial and he will give a Spirit Orb to Link upon completion of the "Buried Secrets" trial.
Once Toh Yahsa's trial has been completed, the unrelenting thunderstorm that normally occurs within the Thundra Plateau will finally cease to be. It is also in here that a Rubber Armor and an Opal can be found.
Inside the Shrine, there are dozens of stone blocks that can be destroyed with the Remote Bomb Rune or the Bomb Arrows or a strong two-handed weapon such as the Iron Sledgehammer or Boulder Breaker. The idea is to destroy the blocks until a metal block is found, which then can be lifted with the Magnesis Rune to a giant Foot Switch, which is also buried behind several stone blocks. However, it is advised not to destroy all of the stone blocks at the bottom, otherwise Link will have to exit since he cannot reach the Sheikah Monk without a foothold to the other platform.
If Link should wind up doing this regardless, Link can simply use the metal box as a platform and then use the Magnesis Rune to put the box back on the switch while still on the northern platform.