Across
1
Landform where river meets the sea
4
Goods sold to another country
5
Deep narrow valley with steep sides
10
Distance east or west of prime meridian
11
Height above sea level
Down
2
Large natural stream of water
3
Low-lying land surrounded by higher ground
6
Large natural elevation of earth
7
Chain or group of islands
8
Vast body of salt water
9
Mountain that can erupt with lava