Climbing in Uetliberg

Hello everyone,

Does anyone know if it is possible to climb in Uetliberg? I can't find a lot of info on it. I just found the following topo but I have no info as if the routes are open, under maintenance, and what kind of equipment is needed (quickdraws/ cams?).

If anyone has more info it would be very much appreciated!

http://www.topodb.ch/images/topos/4985befa36103a2a5b9bdb09d597c25f.jpg

Cheers
Andres