Ka'o Makagh is one of the many shrines located throughout Zelda: Breath of the Wild, and is located within the Lake region, which features the Metal Doors Open The Way trial.
Where to find Ka'o Makagh
This is found next to the Highland Stable in the Lake region, which is found on the road south of Lake Hylia, which itself is south of the starting Great Plateau area.
Like other stable-located Shines, there is no puzzle to solve - just head up, put the tablet in, and down you go.
Ka'o Makagh and Metal Doors Open The Way solution
As the name suggests, this involves using Metal Doors (or specifically, one - which we'll come to in a moment) to solve the Shrine.
First, open the doors ahead of you with Magnesis, and head left to the doors on that side. On the way is a Guardian Scout.
Once defeated, you'll notice to the left of the doors is a column of cracked rock. Switch to the bomb rune to blow it up. Head round the other side and open the chest for a Royal Bow.
Now, with the door unhinged, you can use Magnesis on the side that was closed to the cracked rock, and pull it apart - allowing you to use it as a platform elsewhere.
Head to the platform that was right as you entered, to find a small set of steps (and another Guardian Scout). Lay the door like a bridge over to the platform ahead, and walk over.
You can use it again going up to the altar, but before that, use it on the elevated platform to the left. Head up, and use Magnesis on the chest on top of the blocks to get an Opal.
Want more help? Our Zelda: Breath of the Wild walkthrough and guide steps to completing the game's main quests - including Divine Beasts Vah Ruta, Vah Rudiana, Vah Medoh and Vah Naboris - as well as how to find the Master Sword, Hylian Shield and all Captured Memories locations and Great Fairy Fountain locations, while our Shrines locations and Shrine maps hub explains where to find and solve every puzzle room, including dragon locations and Labyrinth solutions. We also have advice on how to beat Guardians, where to get easy Rupees, tame horses, find how to get cold resistance, fire resistance and heat resistance, and learn the most effective means of cooking with ingredients for bonus effects. We also have a DLC 1 guide and DLC 2 guide, including all Tingle, Majora's Mask, Phantom, Midna outfit locations.
Now head back down, and move the door leading up to the altar to finish the Shrine.
While you're here, here are other Shrines within this region:
Lake region (6 Shrines)
- Ishto Soh Shrine and Bravery's Grasp trial solution
- Ka'o Makagh and Metal Doors Open The Way
- Pumaag Nitae
- Shoqa Tatone and the Guardian Slideshow quest
- Shae Katha (Farosh dragon)
- Ya Naga Shrine and Shatter the Heavens trial solution
If you're after other trials, then our Zelda: Breath of the Wild Shrine locations and maps hub page can help with other regions.