Remains of First World War[ barbed wire obstacle](http://www.novision.fi/viapori/ekuvaeste.htm) in base II:7 in [Krepost Sveaborg](https://en.wikipedia.org/wiki/Krepost_Sveaborg) land front defense line in Länsimäki, Vantaa, Finland. The base was built in 1915 - 1918.
The whole base contains:
* 250 meters of thrench
* 5 machine gun positions
* 4 observations posts
* 14 shelter rooms
More info:
* [Location in Google Maps](https://goo.gl/maps/HhLmMLkiG4nBMtgN8)
* [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=112.1000007677) (only in finnish)