Just before the caver's pre-xmas party, I visited 'Kollinluola' - the cave of the tomcat. Or, the cave of Juho Korkiakoski who was also called Kolli. It is a small cave under rocks.
It is also near Pirunpesä -- the nest of the devil. This is a massive pre-glacial erosion hole, 23 meters deep. It is a tourist attraction and accessible for a small fee.
But back to Kollinluola. Its coordinates are N 62.39841 E 22.89158. I also took a 3D model (see here) and drew automatically a map:
The map is also available in high-res as a PDF file. Of course, there's a lot of uncertainty in the actual sensor workings or the software used for this automatic generation; some fixes were manually applied to the above map, but many probably remain.
More information and pictures:
Here at warnings and structures at the nest of the devil:
Read more urban exploration stories from theurbanexplorer.net, and other underground stories from planetcaver.net. Read the full Planetskier series at planetskier.net, or all blog articles from Blogspot or TGR. Photos, videos, and text (c) 2021 by Jari Arkko. All rights reserved.