Rendered using Cycles in Blender. Post-processing done with GIMP.
This is actually one of the products of a personal project I’m currently working on. I will be sharing more about that project here soon but for now, if you’re interested, you can read about it here: http://bit.ly/TheUnderlandProject
You can also view this art on Deviantart and Artstation
https://doodlenotespictures.deviantart.com/art/The-Fall-745755386
https://doodlenotes.artstation.com/projects/2J8mA
And I made a time-lapse video sharing the process of how I set the scene up in Blender:
That’s all! Thanks!