There is a tall mound of black earth on stage. I like it very much. Naturally, at the Sydney Theatre Company, it looks to be a clean, neat, trim and well-behaved pile of soil, nothing at all like the “colossal cowpat” the Sydney Morning Herald described. The play is Louis Nowra’s The Golden Age, the director is Kip Williams. The Wharf is a small theatre. Seats look down on the playing area. The lights dim. A broken Greek column leans against the little mountain and the stage has become a Greek theatre, in Hobart. In a sleek long white dress,…