William Lewis Herndon, Lieutenant, U.S.N., Exploration of the Valley of the Amazon… (1853)
“ These are the objects that strike the eye of the traveller at his first view. As he rides down the hill, he sees the earth open everywhere with the mouths of mines now abandoned; he is astonished at their number, and feels a sense of insecurity as if the whole might cave in at once and bury him quick. He rides into the narrow, ill-paved streets of the city, and, if he can divert his attention for a moment from the watching of his horse’s footsteps, he will observe the motliest population to be met with anywhere out of the dominions of the Sultan. ”
