Disclaimer: Tolkien's the genius, not me.
He sighed, looking out over the flat, empty lands stretching East from the swift currents of Anduin. they had once been lush and fertile, but harsh droughts following the destruction wrought by Sauron's forces had rendered them, as they were now known, the Brown Lands.
Legend said the Entwives had once dwelt there. Had they all been destroyed with their fields and orchards, Gandalf wondered, or had some fled?
He turned his feet east and north, thinking that he could keep an eye open as he traveled. If any Entwives survived, he woudl see that word got back to Fangorn.