Across
1
Steep rock face at edge of land
4
Low-lying land surrounded by higher ground
5
Goods sold to another country
8
Mountain that can erupt with lava
10
Region between the two tropic lines
11
Dry land with little rainfall
Down
1
Deep narrow valley with steep sides
2
Land surrounded by water
3
Large area covered with trees
4
Line dividing two countries
6
Land surrounded by water on three sides
7
Chain or group of islands
9
Large natural elevation of earth
12
Large slow-moving mass of ice