Understen
| Use attributes for filter ! | |
| Opened | 1848 |
|---|---|
| Range | 42,596 m |
| Focal height | 4800 |
| Construction | Concrete |
| NGA number | 10016 |
| Year first constructed | 1848 (first) |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2958794 |
About Understen
Understen is a Swedish island and lighthouse station located in South Kvarken, east of Öregrund at the northern tip of sea of Åland in Sweden.
