Across
1
Low-lying land surrounded by higher ground
4
Large slow-moving mass of ice
5
Height above sea level
10
Tool for finding directions
11
Largest hot desert in the world
Down
2
Piece of land jutting into the sea
3
Distance east or west of prime meridian
6
Deep narrow valley with steep sides
7
Region near the equator
8
Land surrounded by water
9
Region surrounding the North Pole