Direct answer
Quarrytop is a mining village affected by earthquakes. The setting links a community disaster to the broader cave and ore landscape, but Natsume has not said that mining causes the earthquakes.
Connection dossier
Confirmed anchor
Quarrytop’s mining identity and earthquake problem are both confirmed.
Relationship
The player goes there to investigate the mystery.
Evidence boundary
Causation, mine layout, damaged buildings, bosses, and repair sequence remain unknown.
How to use this page
This dossier prevents an intuitive but unsupported causal claim from becoming site lore.
This URL keeps one decision or gameplay purpose. When verified information changes, the existing page will be updated rather than spawning a competing near-duplicate.
Evidence boundary
Not yet confirmed: exact unlock requirements, numerical values, platform-specific technical behavior, and launch-day route details are not added unless Natsume or reproducible gameplay evidence supports them.