Following the Gaerath catastrophe, substantial populations survived and rebuilt underground. The exact settlement network and the status of the old proper name “Deep Cities” remain open, but the underlying subterranean civilization is WORKING.
Likely infrastructure includes rock or basalt construction, geothermal energy, enclosed biospheres, pressure-managed corridors, underground food production, archives and storage, medical facilities, maintenance networks, and controlled habitat systems.
Long habitation in such environments should produce ordinary cultural consequences. Children know the sounds of pressure doors. People notice airflow. An unsealed door can be serious. Silence can reveal whether machinery is healthy. Light is something civilization must make. Food comes from deliberately maintained ecologies. “Outside” carries historical weight.
The settlements should feel lived in rather than ceremonial. Maintenance labor is socially consequential because shared-system failure can kill communities.
Open questions
- Does 'Deep Cities' survive as a historical or modern Gaian term?
- How decentralized were the underground settlements?
- When and how did significant surface habitation resume?
Related entries
Survival Infrastructure as Cultural Inheritance · The Song of the Deep · Three Builders and Gaian Engineering Culture · Surviving Gaerath Ecology