# Hardthöhlen

> nature reserve in Germany

**Wikidata**: [Q59591881](https://www.wikidata.org/wiki/Q59591881)  
**Source**: https://4ort.xyz/entity/hardth-hlen


## References

1. Nationally designated areas inventory
2. [Nationally designated areas inventory](http://eunis.eea.europa.eu/sites/81828)