Hi,
My suggestion is the world lung, Amazônia Forest.
With tension among USA, Venezuela and Brazil increasing, and droug traffic in Colômbia, I guess that is a good idea create a map including north of Brazil, south of Venezuela and east of Colômbia.
A river in forest.
Manaus city, Amazônia state capital.
The water meeting between Black river and Solimões river.
Boa Vista, Roraima state capital.
Brazilian Air Force Patroling.