I took the train route to the Helsinki-Vantaa airport this morning, wanting to both see the deep underground station and to test the route should my 27-year old car some day not work :-)
It was a great ride, although from Kauniainen you have to go the wrong way first and change trains, wait 12 minutes extra at the changing station, and so on. So I left home roughly an hour and five minutes before arriving at the airport; a long time. By car I'd be there half an hour sooner. Of course, going by train is also 10x cheaper given that one doesn't have to pay for parking or taxis.
Photos and text (c) 2019 by Jari Arkko. All rights reserved. And all urban exploration and underground stories can of course be found from theurbanexplorer.net and planetcaver.net.