IIRC, there was a furrow ploughed across the Egyptian desert for the Imperial airliners to follow to keep on course.
It was in the Iraqi desert, to assist navigation from Cairo to Baghdad.
"
Flying the Furrow"
https://archive.aramcoworld.com/issu...the.furrow.htm
Rutbah Wells features prominently in this article.
It was southwest of Rutbah Wells, that the KLM DC-2 Uiver
PH-AJU (second in the MacRobertson London to Sydney Air Race, behind the DH Comet) crashed in December 1934.
http://www.ephemeraltreasures.net/uiver-part-1.html