 Another earthquake struck in <unk> , and it may have been after this event that the castle was remodelled . The 13th @-@ century work was the last period of building at Krak des Chevaliers and gave it its current appearance . An enclosing stone circuit was built between 1142 and 1170 ; the earlier structure became the castle 's inner court or ward . If there was a circuit of walls surrounding the inner court that pre @-@ dated the current outer walls , no trace of it has been discovered . 
