Background pictures

The main background will be:

National park "Sviati Hory" (Holy Mountains), Donetsk Oblast, Ukraine.
Photographer: Balkhovitin
https://commons.wikimedia.org/wiki/File:%D0%9D%D1%96%D0%B6%D0%BD%D0%B8%D0%B9_%D1%80%D0%B0%D0%BD%D0%BA%D0%BE%D0%B2%D0%B8%D0%B9_%D1%81%D0%B2%D1%96%D1%82%D0%BB%D0%BE.jpg
License: CC-BY-SA 3.0

This picture of an Ukranian natural heritage site has been uploaded
during the Wiki Loves Earth Ukraine competition.

We also introduce an easter egg, with a painting selected by Ælfgar:

John Martin - Le Pandemonium
https://commons.wikimedia.org/wiki/File:John_Martin_Le_Pandemonium_Louvre.JPG
https://www.wikidata.org/wiki/Q18939074
Copyright status: public domain