# Annalper Joch

> ridge prominence of Gräshörner in the Lechquellen Mountains in Vorarlberg, Austria

**Wikidata**: [Q131941758](https://www.wikidata.org/wiki/Q131941758)  
**Source**: https://4ort.xyz/entity/annalper-joch


## References

1. Geographic Information System of Vorarlberg
2. Bregenzerwald- und Lechquellengebirge, 1st edition, 2008
3. Lechquellengebirge, 1st edition, 1977
4. [Geographic Information System of Vorarlberg](https://atlas.vorarlberg.at/portal/map/_sharedmaps/0x3AAE5982F62B6377FD79DD3350B43C2B6EB84B6114CB2F20F926DD5ED579C417)
5. Sonny's LiDAR DTM1