WW1 sealed shelter room, Helsinki, Finland

Description

First World War sealed shelter room in base XXIV:4 in [Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg) land front defense line in Lassila, Helsinki, Finland. The base was built in 1915 - 1918. The whole base contains: * 20 meters of trench * 1 large two room firing position * 1 shelter room More info: * [Location in Google Maps](https://goo.gl/maps/enrJFz9ruwUQ9N9H7) * [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=112.1000013856) (only in finnish)