Their journey to Gran-Toro's main facility had been rather pleasant. Rosetta, understanding Tristan's mindset and desire to adventure had suggested walking.
Sure, they had to use special elevator-like contraptions to descend the various heights, but they spent most of their time on foot.
Tristan got to experience the wealth of nature present in that secret location. He learned only a select few were ever allowed to know the way In and out of the regions surrounding it. She had even given him a bit of its history.
According to history, 'Gran-Toro' was the name of the location of an ancient battle fought between the first inheritors and the cursed beats raging in seventh-class might.
The days-long battle had ended up in a giant crater whose surroundings had been terraformed due to the shock waves of the legendary clash of titans.