This is where a river falls off a mountain.
This is made out of ice.
A place sorrounded by sea.
Lots of tropical plants grow here.
It doesn't rain very often here.
It can be inside a mountain.
A place between two hills.
This can be active or dormant.
These are often by the sea.
The Alps are an example of this.
Rainforest
Cliffs
Mountain range
Valley
Cave
Island
Glacier
Waterfall
Volcano
Desert