This piece is a 3D recreation of an actual photograph taken at "Amdavad Ni Gufa" located at CEPT Campus, Ahmedabad, India.
It was quite the technical challenge to achieve the multi-colored shadows in the scene and I had to use a complicated 3-point RGB light setup to achieve this look.
I also heavily used GIMP to composite the various layers of this render and for post-processing effects.