Caracas
Barcelona
El Tigre
Venezuela
Orinoco River
Kilometro 88
Colombia
Santa Elena
de Uairen
Brazil
250 km
250 miles
Caracas
Barcelona
El Tigre
Venezuela
Orinoco River
Kilometro 88
Colombia
Santa Elena
de Uairen
Brazil
250 km
250 miles
Graphic: Jan Diehm/The Guardian