Joniu is a Surface shrine in the Lanayru Great Spring region on the Upland Zorana Skyview Tower map

In the Lanayru Great Spring Depths below is the Uinoj Lightroot

The trial in this shrine is Rauru's Blessing

Joniu can be found within the Upland Zorana Summit Cave

Completing the quest The Ralis Channel Crystal will grant passage to this shrine

Joniu contains Large Zonai Charge