Steel Ruins was the central region of this subspace secret realm.
It had taken Saine and the others more than a year to reach this place—a feat far from easy.
Unlike most regions of this subspace secret realm, which consisted of yellow-sand environments,
the Steel Ruins, as far as the eye could see, was an endless expanse of wrecked steel ruins.
One could imagine how many towering steel structures had once stood throughout this region, and what a brilliant, glorious Technological Civilization they had created.
But now, only stretches of ruined relics bore witness to the former might of the Ai Youlan Butterfly Civilization.
Led by Wall-E, Saine and his group headed deeper into the Steel Ruins.
This was where Wall-E primarily worked and lived. Even tens of millions of years had not been enough for Wall-E to clear all the "garbage" from this enormous ruined city.
And to completely clear this boundless Steel Ruins, who knew how much longer Wall-E would need.
The lives of the Ai Youlan Butterfly Civilization's creatures had been integrated across sea, land, and air.
Beneath these Steel Ruins still lay an immensely vast expanse of space.
The underground's breadth and complexity even surpassed that of the Surface World.
After all, the high-rise buildings on the surface had collapsed and crumbled under the erosion of countless tens of thousands of years, whereas the underground structures had remained relatively well preserved.
Wall-E's little home was located in the outer-middle region of the Steel Ruins.
It had settled here because the yellow-sand storms on the outskirts were far too violent, and Wall-E had rarely ventured outside over the past nearly one million years.
The reason it had not chosen to live in the heart of the Steel Ruins was equally simple. Wall-E said it had not even