Across
1
Landform where river meets the sea
3
Visual representation of an area
6
Deep narrow valley with steep sides
7
Height above sea level
9
Cold treeless Arctic plain
10
Wearing away of land by water or wind
Down
2
Largest river in South America
4
Large natural stream of water
5
City that is seat of government
8
Vast body of salt water
11
Land surrounded by water
12
Land surrounded by water on three sides