This image is a work by Wikipedia and Wikimedia Commons user Jarosław Kruk (Jrkruk). When reusing, please credit me as author: Jarosław Roland Kruk / Wikipedia, licence: CC-BY-SA-3.0 If you use my image on your website, please send me an email with webpage adress. If you use my image in your book, please send me one copy to my home adres, which I will provide by email. Contact me at: jaroslaw.kruko2.pl More of my work can be found in my personal gallery. pl en +/− pl en +/−, via Wikimedia Commons (CC BY-SA 4.0)