The Grassy Fields Hot Spring is located in the Saru Plains area, which lies at the northern end of the Tokachi Range. This Hot Spring sits prominently in a grassy fields area visible on the regional map. The exact spot is identifiable by the distinctive red-leafed bonsai trees and visible steam rising from the spring.
How to reach the grassy fields Hot Spring step-by-step
Step 1
Travel north in the Tokachi Range towards the Saru Plains. Use your map to locate the northernmost part of this region where the grassy fields start to open up.

Step 2
Look for the wide-open grassy area on the map marked with a Hot Spring icon (a wooden hot tub symbol).

Step 3
Keep an eye out for the small bonsai-style trees with red leaves around the steam, signaling the Hot Spring's exact location.

Step 4
Approach the Hot Spring carefully, and interact with the water bucket or the spring itself to have Atsu bathe in the onsen.

This action will trigger a scene where Atsu reflects and then gain a permanent boost to maximum health.

Step 5
After the bath, explore nearby for any related notes or a black fox companion that might guide you to further in-game activities or offer story dialogue.
Hot springs in Ghost of Yotei let Atsu rest and reflect, and doing so rewards her with a permanent increase to maximum health. Finding all 16 hot springs is also tied to the Body, Mind, and Spirit trophy.
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