Viimsi Koobas, or the caves of Viimsi, are a man-made set of tunnels on a cliff face rising near the Vimka - Viimsi Mäepark ski hill. There may be more than one tunnel and the tunnels are supposed to be longer, but I think they have been filled with sand or collapsed, as I was able to find only one about 13 meter long tunnel. Nice visit still, though.
Here is the information sign near the tunnels:
The coordinates to this place are N 59.517783 E 24.839870. It is the village of Lubja, in the region of Vimsi. Just outside city of Tallinn.
Also saw one very frosty bat... poor thing. I wonder if it is OK....
The end of the tunnel:
The entrance:
Side tunnel:
I also made a 3D scan of the tunnels with my iPhone's Lidar function, and then converted it to a cave map using the cave-outliner software (link). Below you can find the map and a screenshot of the 3D model. The high-resolution map PDF is here. The model can be downloaded here (GLB) and rotated on your browser screen here.
See also my other article about the Tallinn visit (alt. link), and in particular the one about the Naage Koopad (alt. link) real caves!
This article has also been published at Planetcaver.net here. Read the full Planetskier series at planetskier.net, urban exploration stories from theurbanexplorer.net, and other underground stories from planetcaver.net, or all blog articles from Blogspot. Photos and text (c) 2026 by Jari Arkko. All rights reserved.
This article was originally published in the Planetskier Blogspot article series.
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