Not so much time to participate for a challenge, but regarding the theme, I can't pass.
So here is a quick concept for the 14th Digital Painting School - post apocalytic challenge.
Prompt was to define the major vista from the Water Keepers, a faction in charge of the most rare ressource on earth in this slight distant future. Their main city has been built on the last clean delta on earth, I assume it's the Nile don't know why.
Only 4 hours to make it in the last two days, quite a rush, quite happy of the colorful mood as I'm pretty bored of classic post-apo visuals.