The Bedawin far more reasonably declare that this Harrah is not a mere patch as it appears in Wallin's map, a narrow oblong not exceeding sixty miles (north lat. 27°--28°), disposed diagonally from north-west to south-east. According to them, it is a region at least as large as the Hismá; and it extends southwards not only to the parallel of El-Medínah, but to the neighbourhood of Yambú'. The upper region has two great divisions: the Harrat-Hismá or the Harrah par excellence, which belongs to the Ma'ázah, and which extends southwards through El-Sulaysilah as far as the Jaww. The latter region, a tract of yellow sand, dotted with ruddy hills, apparently a prolongation of the Hismá, separates it from the Harrat el-‘Awayraz, in which the Jebel el-Muharrak lies.[EN#156] This line of volcanism is continued south by the Harrat el-Mushrif (P.N. of a man); by the Harrat Sutúh Jaydá; and, finally, by the Harrat el-Buhayri. the latter shows close behind the shore at El-Haurá, in nearly the same latitude as El-Medínah, where we shall presently sight it. There is great interest and a general importance in this large coast-subtending eruptive range, whose eastern counterslope demands long and careful study. Sweeping the glance round to south, we see the southern of the two Jilsayn, tall mounds of horizontal strata, with ironstone in harder lines and finial blocks. This is the Jils el-Dáim, so distinguished from the northern Jils el-Rawiyán. The lower edge of the Hismá swells up in red and quoin-like masses, the Jibál el-Záwiyah, and then falls suddenly, with a succession of great breaks, into the sub-maritime levels. During our next ten days' travel we shall be almost in continuous sight of its southern ramparts and buttresses. Far over the precipices lie the low yellow sands of the Rahabah, alias the Wady Dámah; and behind it rises the sky-blue mountain block, which takes a name from the ruins of Shaghab and Shuwák. We breakfasted upon the Khuraytah crest; and Mr. Clarke set out to shoot the fine red-legged "Greek" partridges (caccabis) that haunt the hilltops, whilst the rest of us marched with the caravan to the nearest camping-ground. About a mile from the Col, and lying to the west of the Jils el-Rawiyán, it is supplied with excellent drinking-water by the Miyáh el-Jedayd, lying nine hundred to a thousand metres to the south-east. On the other hand, fuel, here a necessary of life, was wanting; nor could the camels find forage. Thus we were camped upon the western edge of the Hismá. The Ma'ázah Shaykhs, who vainly urged us forwards, showed a suspicious disappointment at our not reaching their quarters on the far side, where, they said, a camel was awaiting to be slaughtered for our reception.