WW1 trench traverses, Helsinki, Finland

First World War machine gun position and trench [traverses](https://en.wikipedia.org/wiki/Traverse_(trench_warfare)) in base XV:2 in [Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg) land front defense line in Tuomarinkartano, Helsinki, Finland. The base was built in 1915 - 1918. The whole base contains: * 3 observations position * 4 machine gun positions * 2 shelter rooms More info: * [Location in Google Maps](https://goo.gl/maps/188C3etDbDA3piBX7) * [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=112.1000013611) (only in finnish)