Across
1
Large natural elevation of earth
5
Mountain that can erupt with lava
8
Cold treeless Arctic plain
9
Area where water covers the soil
10
Where river meets the sea
11
Largest hot desert in the world
12
Piece of land jutting into the sea
Down
2
Narrow sea inlet between cliffs
3
Flat grassland in tropical regions
4
Steep rock face at edge of land
6
Deep narrow valley with steep sides
7
Vast body of salt water