http://dwnewsgngmhlplxy6o2twtfgjnrnjxbegbwqx6wnotdhkzt562tszfid.onion/en/how-scientist-alexander-von-humboldt-put-spanish-south-america-on-the-global-map/a-46693502
It would be a 75-day 2,250 kilometer (1,400 mile) journey through wild and mostly uninhabited territory full of crocodiles, powerful electric eels , boas, jaguars, rapids, humidity and hunger. The travelers lived off of rice, ants, manioc, river water and the occasional monkey.