Помогите перевести, please. City flowed. В каком значении flowed?

Сломала голову. Теряюсь в догадках. Весь текст здесь http://notabenoid.org/book/53738/232273/64070112#20
The Thunderer could go higher than he had ever been able to. From so far above, the city flowed He was amazed that he had never seen it before.