WW1 Search light position, Helsinki, Finland

First World War trench search light position in base XVIII:10 in [Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg) land front defense line in Kasemattikallio park, Maununneva, Helsinki, Finland. The base was built in 1915 - 1918. The whole base contains: * 150 meters of thrench * 2 observation positions * 2 search light positions * At least 5 shelter rooms * 120 m² cave More info: * [Location in Google Maps](https://goo.gl/maps/2u5Yg7efC29X3urW9) * [Wikipedia: Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg) * [John Lagerstedt , Markku Saari: Krepost Sveaborg](http://www.novision.fi/viapori/eavaus.htm) * [Finnish Heritage Agency site info](https://www.kyppi.fi/to.aspx?id=112.1000013737) (only in finnish)