# Vallvik upper light
**Wikidata**: [Q110550675](https://www.wikidata.org/wiki/Q110550675)  
**Source**: https://4ort.xyz/entity/vallvik-upper-light


## References

1. Swedish list of lights. 1978
2. [Fyrwiki](https://fyr.org/wiki/index.php/Vallvik)
3. [notice to mariners. 2008](https://www-o.sjofartsverket.se/upload/ufs/2008/Nr%20223.pdf)
4. [NGA List of Lights, Radio Aids and Fog Signals. 2021](https://msi.nga.mil/api/publications/download?key=16694312/SFH00000/NIMA_LOL/Pub116/Pub116bk.pdf)