we visited this site in november 2012. After purchasing our tickets we started to walk on the foothpath and saw on our right the Mitridate II inscription and the Hercules statue both from partic times. We the walked down to the caravanserrail only to find out it was closed. Disappointed we tried to reach the main attraction of the site, the achemenid bas relief by Darius the Great only to find out that the stairway to it was closed. Even from below it was impossible to see anything because they had covered the structure of the stairs with wooden panels. Furious we went to the ticket office but the man in charge said it was closed because it was too dangerous. We left saying that we were going to complain with Unesco but stopped not far from there. With no surprise (once you get to experience the extremely proud and kind attitude of iranians towards strangers) the man reached us with the keys and accompanied us to the top where we had the chance to see this masterpice on our own for about 20 minutes and take fantastic pictures. As expected when we tried discretly to tip him something for his help he firmly refused and warmly waved us good bye.