Thanks all!
Tommy, I appreciate your detailed comments (also on others work:). Not sure if a less sharp picture will work better; I'll play a bit and try different PP route and then maybe replace it...
Christina, That's just a tiny part of otherwise very well maintained wall ;-)
Gorgeously captured abstract patterns and tones in a well balanced composition. Although the mind wants to wander, the rough, hard-edged shapes keep it from becoming too dreamy. -tv