First World War trench shelter room in base XXXI:2 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:
* 7 firing and observations positions
* 12 shelter rooms
More info:
* [Location in Google Maps](https://goo.gl/maps/8c8MBd3GW3GCais57)
* [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=112.1000007807) (only in finnish)