It is closed, there is no work schedule, the locals themselves do not know when it works, apparently only when concerts are held. There's nothing to do there, unless you take pictures from behind the fence.
As already mentioned, the amphitheater is closed. But the locals said that you can safely climb over the fence. A modern place, solely for the sake of photos
To take pictures and no more, it would probably be good to get to some concert Next to the entrance on the right there are posters
There is also a cemetery on the right