Image of an ancient fresco on the wall of Sigiriya (Lion's Rock), Sri Lanka. John Still in 1907 suggested, "The whole face of the hill appears to have been a gigantic picture gallery... the largest picture in the world perhaps". The paintings would have covered most of the western face of Lion's Rock, covering an area 140 metres long and 40 metres high. There are references in the graffiti to 500 ladies in these paintings. However, many more are lost forever, having been wiped out when the Lion's Rock once more became a Monastery so that they would not disturb meditation. The frescoes are considered unique. The lines are painted in a form that enhances the sense of voluminousness of figures. The paint has been applied in sweeping strokes, using more pressure on one side, giving the effect of a deeper colour tone towards the edge. It also has sketchy lines having a distinct artists' boundary line.