# Sonderberg

> monadnock in the Alpine Rhine Valley in Vorarlberg, Austria

**Wikidata**: [Q94998304](https://www.wikidata.org/wiki/Q94998304)  
**Source**: https://4ort.xyz/entity/sonderberg-q94998304


## References

1. [Geographic Information System of Vorarlberg](https://atlas.vorarlberg.at/portal/map/_sharedmaps/0xD06F73E7B58D447D34768AD136A553AE93D2BAF4AF57F55725A02D17A9793B82)
2. Geographic Information System of Vorarlberg
3. Sonny's LiDAR DTM1