I'm sorry but the walls are covered moss and very dirty, the flash light is not used.
little effect hdr, as in this case
I somewhat agree with panda, but I don't think you would have been able to accomplish this in the conditions that you shot the pic. Superb process
Excellent under the conditions. Like it.
Your participation of Commenting and Voting would be greatly appreciated by All.
Great Effort Hasan
A bit flat, adding more contrast may help