"نجد الجنوبية: رحلة إلى الخرج والأفلاج والسليل ووادي الدواسر في سنة ١٩١٨." [ظ‎‎٨] (١٠٠/٢١)

Sahaba from a hillock of the Firzan ridge, and the three following
days (May 8 to 10) were spent in visits to practically all the
settlements of the valley, great and small. On the evening of
May 10 1 passed out of the district having covered some fifty
miles m my wanderings from place to place.
The Kharj valley is a long depression sloping down from
south to north with a slight easterly inclination especially at the
northern extremity. In length is about thirty-five miles from
south to north; its greatest breadth is about eight miles in its
northern halt while to the south it tapers almost to a point
w ere ie conveiging of the hills on either side leaves a narrow
gap tQi- the passage of the Ajaimi torrent. It is bounded on the
north by the VUdi Hamfa, on the west by the extremities of
e Alaiya section of the Tuwaiq range and on the east by the
outer rim of the vast desert upland of Biyadh, a stonv barren
waterless tract, beyond which, many days journey from Khari'
he the first sands of the Great Desert. Southward beyond the
apex of the valley extends a wide plateau in which the Aiaimi
comes into being out of the gathering of countless streams
om east and west At the north-eastern extremity of the vallev
lies the head of the Sahaba depression, which to all intents
and purposes is but a continuation of Wadi Hanifa augmented
Of lo^Tth m : dlUm f the Kllarj Val1 ^ ^ drainage
Wn r w V most important arteries of Central Arabia Of
partof Z Tn ^ lngS d0 T tIie draina g e of northern
noted n^ and 0f ^Dbnima plain as already
of Shaib Nisah } 1 ^ neXt to ^ comes tlie broad channel
propL Je west of T 111 ^ eaStern Section of Ne i d
lying to the south ^ lligl1 llllls Called Bukhara,
lying to the southward of the series of Nafudhs crossed bv
iZdCir-^'-r-"» T ™"«
down into f\ sectlons b y a broad level crossing and runs
tlal 80U th ? e / irZan rid « e and o
diafned Into rte Rl 6 h . the Aki y a section 0 f Tuwaiq is
great and small, collecting aTthe o^ A^Trt and eS '
» d «
its centre in^ the ^ahaba reS P e f VeI y' ^ ™ down
Wad! Fara, the continuation of Shaib SfatnVhf! 1
r... o, „„„ . nd H .. fc