Sikukuu Shrine is in the Eldin Mountains, north of the Korok Forest and southeast of the Thyphlo Ruins Skyview Tower.
Shrine Location
Sikukuu Shrine is located at 0699, 2793, 0226. It can be found southeast of Thyphlo Ruins Skyview Tower, in the Eldin Mountains.
Spinning Gears
When an orb has just fallen off of the spinning gear, use Recall on the gear to make it go backward. The next orb that falls on it will be pushed to the right, where it will fall into the floor switch and open the bars. Go through.
In the next area, use Ultrahand on the crank on the wall to turn the gear counterclockwise for a while. Then use Recall on the gear, and stand on one of the teeth on the right side to go down into the area where there is a treasure chest. The chest contains a Zonaite Longsword. Then use Ascend to go back up.
Next, turn the crank to make the gear go clockwise for a while. Then use Recall on it and stand on one of the teeth on the right side to be raised up to the ledge above. From there, you can check on the dragon ring to get a Light of Blessing and complete the shrine.