i forgot to add that, yeah these are all nature made, this 150 sq-km in Turkey is an volcanic erruptions effected area, erruptions of 2 volcanos started 25.000.000 years ago and first filled the area with thick ash, then lava covered these ashes and presses, then due to the natural external effects like rain, wind they started to reshape interestingly as can be seen from my pictures.. take care always..
Dear Larry, yeah only a few trials, actually you are the master of it, i know it is very difficult to balance the light to get impressive white & black shades and i appreciate your art-works :)) Keep well and enjoy the pleasant climate of PH, i guess this is the best time now-a-days to travel over there :))