Across
1
Imaginary line around the middle of Earth
4
Height above sea level
5
Narrow sea inlet between cliffs
6
Largest hot desert in the world
9
Steep rock face at edge of land
11
Low-lying land surrounded by higher ground
12
Visual representation of an area
Down
2
Deep narrow valley with steep sides
3
Large slow-moving mass of ice
4
Largest river in South America
7
Ridge of rock or coral near the surface
8
Region near the equator
10
Land surrounded by water