Wao-os is a Surface shrine in the Hebra Mountains region on the Rospro Pass Skyview Tower map

In the Hebra Mountains Depths below is the So-oaw Lightroot

The trial in this shrine is Lever Power

Wao-os can be found within the West Lake Totori Cave

Completing the quest The White Bird's Guidance will grant passage to this shrine

Wao-os contains Cold Resist Elixir