Study the topographic map and symbol chart.
A topographic map with 4 regions labeled. The symbol chart shows a light green square with darker green shrublike icons representing swampland. A single black line with two hashes represents railroad tracks. Region 1 is a light green area with darker green shrublike icons. Region 2 is a green area with several contour lines. Region 3 is a green area with several contour lines. Region 4 is a flat green area near the Colorado River.
At which point is swampland located?
1
2
3
4