Trehörningen, Tyresta
 | This article may be expanded with text translated from the corresponding article in Swedish. (October 2011) Click [show] for important translation instructions.
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| Trehörningen | |
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 Lake Trehörningen, in Tyresta National Park | |
  Trehörningen | |
| Coordinates | 59°11′46″N 18°17′55″E / 59.19611°N 18.29861°ECoordinates: 59°11′46″N 18°17′55″E / 59.19611°N 18.29861°E |
| Basin countries | Sweden |
Trehörningen is a lake in Tyresta National Park in Stockholm County, Sweden.
 | This article about a location in Stockholm County, Sweden is a stub. You can help Wikipedia by . |
Categories:
- Lakes of Stockholm County
- Stockholm County geography stubs