Colonizers escaped (to mountainous areas) to avoid the swamps that bred malaria. Those areas are no longer safe,

Where there are no swamps there are no frogs

Wheat in many areas greened up in January and can no longer be considered dormant.

We are disappointed to have to leave, but we now have no alternative, as we no longer have the fuel resources to stay.

The terrain is mountainous and difficult to access.

There is no safe haven in today's markets.