Although this has the highest D rating among the the three Perhepuisto mysteries, it is the only one I could solve so far. I wanted to get it later, once I managed to solve the other ones - but as I need some time for those, I decided t visit this one today.
It might not be the best time of the year to get here, as the planned route (given the map on my GPS) was blocked by some major works. I still managed to somehow find a way to ground zero, although it seems I lost the path a few times. But well, ground zero was still fairly reachable. At the spot, I was afraid I would need some time to locate the box... but the GPS was nice, and quickly took me to the best spot to locate the cache.