Across
1
Height above sea level
5
Deep narrow valley with steep sides
6
Region surrounding the North Pole
9
Low area between mountains
11
Largest river in South America
12
Line dividing two countries
13
Low-lying land surrounded by higher ground
Down
2
Large natural stream of water
3
Large natural elevation of earth
4
Dry land with little rainfall
7
Chain or group of islands
8
Ocean between Americas and Europe/Africa
10
Land surrounded by water on three sides