Nauvo is a large island in the archipelago south of Turku, Finland. Varberget is a set of small caves on a cliff ridge that rises on the island.
Janne and I took a day to drive to Nauvo, ride the ferries with our car, and hike to the ridge. We found a small cliff that was cut by horizontal and vertical cracks. There were at least four major areas of cracks. A horizontal crack system was running through a long distance through the ridge, though unfortunately disappearing here and there, so you the caves are really separate small ones rather than one large cave.
But Varberget is a nice hiking destination, the caves are easily explored by anyone, as long as you have clothes that you are willing to crawl in a bit. At the top of the ridge there is an observation tower.
Photos and videos (c) 2016 by Jari Arkko and Janne Arkko. This blog is also available on the Blogspot website. Tama blogi loytyy myos suomeksi Relaasta.