In reply to glaramara:
Can't really help, as I've only trekked there in autumn, but I really liked the area. It was also in 2005, so I don't remember it that clearly! Arid, slightly loose mountains was my main impression. It was also relatively unvisited, with no infrastructure in the hills, other than a filthy hosepipe and a nasty temporary loo at one camp (boots required, not sandals!)! I'm sure its changed by now, but hopefully is still relatively undeveloped.
We climbed the second* highest peak, Emler, south of Demirkazik and an easy scramble from a pass, having walked in from the west. It was clear from both seeing and reading about Demirkazik, that it was a proper climb in summer (Severe ish??? Don't quote me!), so could be good sport in winter.
There seems to have been quite a bit of sport climbing development there. The couple who seem to be at the forefront of it, Recep & Zeynep Ince, run this place and might be worth getting in touch with: https://www.aladaglarcamping.com/
The high basin of Yedi Goller is a pretty remarkable place, I'd happily have spent more time there. Again, might be very different at this time of year.
We descended east from there via an impressive deep valley, Hacer Vadisi, a stunning place with massive rock walls and a beautifully wooded valley bottom once you dropped from the high parts.
Really enjoyed it, proper mountains in a compact range rising above the plains, so the views from the flanks were endless and you had a real feeling of being high up.
I've also enjoyed reminiscing and googling to see what's changed, and its actually pleasing to find very little info!
*Heights seem somewhat unreliable, and vary from map to map!