Saas Ko'sah is one of the many shrines located throughout Zelda: Breath of the Wild, and is located within the Central region. The challenge inside is one of many Test of Strength Shrines, has you taken on a powerful foe in combat.
Where to find Saas Ko'sah
This is the only Shrine located within Hyrule Castle, which is located within the game's Central region.
It's specifically found in the Castle's Docks. The easiest way to get in is by going to the north, on the cliff overlooking the moat, and gliding south to the castle, with an opening in the rock.
Inside the docks, take out or sprint past any enemies that spot you, then head up the steps to the left, and continue going to the upper level.
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.
There, you'll spot a giant lamp on the right. Light it - the easiest way is to aim an arrow, tip the end into one of the lit torches around you - to make a Shrine emerge in front of you.
Head down, and you'll face one of the many Test of Strength shrines. Completing it will reward you with a Flameblade.
While you're here, here are other Shrines within this region:
Central region (8 Shrines)
- Dah Kaso shrine location
- Kaam Ya'tak Shrine and Trial of Power solution
- Katah Chuki shrine location
- Namika Ozz shrine location
- Noya Neha shrine location
- Rota Ooh Shrine and Passing of the Gates trial solution
- Saas Ko'sah
- Wahgo Katta Shrine and Metal Connections 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.