Western Colombia has several Andean ranges separated by valleys. Lower ground extends east towards the Orinoco and Amazon basins. The country reaches both the Caribbean and Pacific, so a coastline in a Colombian image may have a very different setting depending on which side you see.
The Andes split into separate ranges
Trace the Magdalena valley between mountain belts, then compare it with the lowlands east of the Andes. Notice how the river network changes with the relief.
Similar landscapes across borders
Mountain farming can resemble Ecuador or Peru, while eastern forest continues into Brazil. A green valley alone is insufficient. Try to establish whether the river runs between ranges or across a lowland plain.