Kekrops leaned away from Hazel as if she somehow offended him. 'Millennia ago, we were driven underground by the two-legged humans, but I know the ways of the city better than any. I came to warn you. If you try to approach the Acropolis aboveground, you will be destroyed.' Jason stopped nibbling his cake. 'You mean ... by you?' 'By Porphyrion's armies,' said the snake king. 'The Acropolis is ringed with great siege weapons - onagers.' ' onagers?' Frank protested. 'Did they have a sale on them or something?' 'The Cyclopes,' Hazel guessed. 'They're supplying both Octavian and the giants.' Percy grunted. 'Like we needed more proof that Octavian is on the wrong side.