Evening exercise, drive to Nuuksio and visit Sikalammen Luola ("Cave of the Pigpond"). I found it, although the forest in the area is difficult going.
This cave is a small roof cave on a cliff, maybe 4-5 meters wide and 2-3 meters deep. Not really a proper cave, but ... this is what we have in Finland!
For some reason there is a brown children's sled in front of the cave.
The coordinates for the cave are N 60.27798 E 24.60321.
Photos (c) 2018 by Jari Arkko. All rights reserved. More caving articles can be found from planetcaver.net.