http://dwnewsgngmhlplxy6o2twtfgjnrnjxbegbwqx6wnotdhkzt562tszfid.onion/en/how-scientist-alexander-von-humboldt-put-spanish-south-america-on-the-global-map/a-46693502
He crossed the equator twice, spent about 16 months in today's Venezuela and explored the Orinoco River basin, another 22 months in Colombia and the Andes, and nearly a year in Mexico. A detail out of Humboldt's South American travel journal from 1801 with a drawing of a mercury barometer he carried with him.