Across
1
Low-lying land surrounded by higher ground
3
Piece of land jutting into the sea
5
Line dividing two countries
7
Tool for finding directions
9
Goods brought in from another country
10
Height above sea level
11
Large slow-moving mass of ice
Down
2
Flat elevated area of land
4
Largest river in South America
6
Flat grassland in tropical regions
8
One of seven major landmasses