# spiral

> railway feature

**Wikidata**: [Q846907](https://www.wikidata.org/wiki/Q846907)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Spiral_(railway))  
**Source**: https://4ort.xyz/entity/spiral-q846907


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)