Unexplored dungeons

There are many specially fenced passages into the dark unknown, where there is no light, but a booming echo. According to some rumors, during recent explorations, a second tier of dungeons was discovered, extends south towards the Temple Mount. Further research, however, was stopped for political reasons, not to quarrel with the Arabs (it was thw time when Oslo agreement was concluded). But I know where the entrance is! You just need to find the Masonic sign on the wall 'Robinson 18XX'. And it will be there...