Hill of Gruissiono

"For Zuxan..."

- Aino flying to the hill, Quest for the Four Great Lands

Hill of Gruissiono or Gruissiono Hill is a very mysterious hill. After Gruissiono City was blown up, the hill mysteriously rose on the place of Gruissiono Control Building. On top of it, Temple of Gruissiono appeared. It was never touched by Bruhodag even though he could, because he was afraid of it's mysteriousness.

When Tapio and his friends came to put the last stone in it's temple in Quest for the Four Great Lands, it had already been taken by Grandeg's Robots. The freed Matoran of Gruissiono started to battle against them and finally won.

The hill has been left intact, along with the temple. The Gruissiono Matoran are currently rebuilding their city, using the Hill as a center, as a root for it.