The Lynx map about the remnants of Soviet occupation in Porkkala pointed to a bunker in Vårnäs, next to Kabanovintie. But, I think what's on the site is more likely remains of farm houses and wells/sewers.
Interesting place though, as is Porkkala in general. I also found 20-30 severed moose legs, this is probably someone's moose hunt butchering spot.
Coordinates: N 60.070668 E 24.483113.
(Original source video is also available here.)
Photos and videos (c) 2017 by Jari Arkko. All rights reserved. Music by Apple iMovie.
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