For all, who wants to fly in Slovakia, is hand-painting map here.
https://malovanemapy.sk/mapa/slovensko-z-neba.html
You can to see - fully to the West, west from Malacky Military airport, near the border with Austria, near a small village...
Very nicely written article too. Now the secret is out :-)
http://www.frasercoastchronicle.com.au/news/high-in-the-sky/2204541/?utm_campaign=Mailchimp+Afternoon+News&utm_source=Fraser+Coast+Chronicle&utm_medium=email