The Amazon crosses northern Brazil through an extensive lowland forest region. South and east of that basin, the landscape rises into the Brazilian Highlands. In detailed imagery, agricultural clearings and roads may break up otherwise wooded land; their arrangement can help describe land use but does not establish a national border.
The Amazon and the central plateau
Locate the Amazon mouth and trace the river inland. Compare a section near the main channel with the higher ground to the south.
Similar landscapes across borders
The Amazon forest extends into neighbouring countries. Dense green canopy alone cannot separate Brazil from Peru or Colombia. Look for a recognisable river junction or a wider regional position before making that distinction.