Operator:
- Vaadwaur
- Turei
Miscellaneous:
- Prior to the 15th century, the Vaadwaur discovered & charted them
- Using them to travel throughout the Delta Quadrant, they conquered many worlds
- Eventually, the Turei formed a coalition and eliminated the Vaadwaur threat
- They then claimed the Underspace for themselves, unable to maintain them;
- Resulting in the gathering of debris in the corridors