WW1 shelter room, Espoo, Finland

First World War trench shelter room and machine gun position in base XXXI:4 in [Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg) land front defense line in Laajalahti, Espoo, Finland. The base was built in 1915 - 1918. The whole base contains: * 270 meters of thrench * 9 firing and observations positions * 11 shelter rooms More info: * [Location in Google Maps](https://goo.gl/maps/DDTCyr68sDyxcnpVA) * [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=112.1000007809) (only in finnish)