Source (link to git-repo or to original if based on someone elses unmodified work): https://www.pexels.com/photo/mountain-under-white-sky-3012603/
Mountain Range and Clouds Oil Painting 4K Wallpaper
With or Without KDE logo
3840 x 2160 px
* Note - Gallery photos are in low quality,
but original wallpaper contain in files are in highest quality!