Quash went around the mining sites, trying to find the wall that he only knew from the novel.
He knew what he was looking for, so that was not a problem. But where it was remained the issue, forcing him to run around a lot. Through this, however, he learned a lot about how the economy of the Academy City works by talking to a few dudes.
This rush of students near the low-level dungeon would last only about a month before they stopped coming. After a few months, they would be stable enough to afford long-distance travel and stacked enough to make long trips.
He also asked around if anyone knew of some quiet place to mine. The reason for doing that was to avoid looking suspicious.
Imagine a guy with a makeshift mask just walking around with no pickaxe where everyone else came to mine. That would surely arouse suspicion from the prospective students.
