Dream landscapes can have a bizarre quality about them in order to highlight a particular message.
For instance, there may be trees made of ice, or rocks made of sugar.
The plot of the dream may be important in arriving at the correct interpretation of these symbols.
The landscape in a dream can also indicate how we relate to other people.
To be in a desert might represent loneliness, whereas to be in a jungle might represent a very fertile imagination.
If the landscape changes between the beginning and end of the dream, we perhaps need to make corresponding changes in everyday life.