South of this great belt of sand, red sandstone reappears in shelving masses leading up to the great mountainous district which forms Sinai proper, the third region of the peninsula. These mountains are traversed by many river-beds or wadies. Some of them, according to the ways of the country, do not bear the same name throughout their course, but the main stream frequently takes another name when it is joined by a tributary. Thus the Wadi Nasb after its junction with the Wadi Beda becomes the Wadi Baba, and so forth.
This sandstone district is cut into by deep gorges and canyons, that have sheer falls of several hundred feet in places. It comprises the mountains which yielded turquoise and copper, products that brought the neighbouring people into Sinai. Beads of turquoise were found in the pre-dynastic tombs of Egypt which probably came from Sinai, while there was an increasing demand for copper in the surrounding countries from the close of the Neolithic Age. If the name Milukhkha of the Babylonian records refers to Sinai, these people also came there several thousand years before our era.
Turquoise appears in a ferruginous layer in the sandstone at the height of about 2650 ft. at Serabit, and at the height of about 1170 ft. at Maghara above sea-level. The copper ore occurs in the Wadi Nasb, and in the Wadi Khalig, somewhat extensively in the latter, together with iron and manganese. Enormous slag heaps lie at the head of the Wadi Nasb and near the outlet of the Wadi Baba, which bear evidence to former smelting activity. Again, in the Wadi Sened, a dyke rich in copper traverses syenite for a distance of nearly two miles.
The district which was worked by the ancient Egyptians was comprised between the valley system of the Wadi Baba on the north, and that of the Wadi Sidreh on the south, both of which have their outlet in the direction of the coastal plain of El Markha. It was from this side that the ancient Egyptians approached Sinai. The chief height of the district is the Tartir ed Dhami (black cap), so called from the dark basalt that forms its summit, which rises to a height of 3531 ft. There is also the double-peaked Umm Riglên (mother of two feet) which rises to the south of the Wadi Umm Agraf and dominates the height of Serabit.
To the south of the ancient mining district the sandstone is connected in a manner highly interesting to the geologist with the plutonic rock which gives its imposing character to the mountains of the south. Here lies the Wadi Feiran, one of the best watered and fruitful valleys of the peninsula, to the south of which Mount Serbal rises abruptly from a comparatively low elevation to the height of 6734 ft. This mountain has been described as one great lump of diorite, and its majestic appearance led some recent travellers, including Lepsius[2] and Bartlett,[3] to identify it as the Mountain of the Law. Further south lies the great group of mountains which include the Gebel Musa, 7359 ft. high, and the Gebel Katrîn with its three peaks, the highest of which rises to 8527 ft. The Gebel Musa from early Christian times was generally looked upon as the Mountain of the Law. At its foot lies the great convent of Sinai, at one time known as the Bush, which has carried on to the present day the traditions of the early Christian hermits, who settled in the peninsula. The Gebel Katrîn lying further south, was looked upon during the later Middle Ages, as the height on which the angels deposited the body of St. Katherine. Another imposing height of the group is the Ras Safsaf, 6540 ft. high, which has been put forward in recent times as a possible Mountain of the Law.
These mountains of the south contain many natural springs and fruitful valleys, which were formerly the home of Christian ascetics. They are divided from the Gulf of Suez on the west by the desert of El Kaa, which drains a large amphitheatre of hills, and becomes a coastal plain that extends as far as Ras Mohammad, the southernmost point of the peninsula. The desert of El Kaa has a harder subsoil which is so tilled that the accumulated moisture is thrown up at the coast near Tur, the chief harbour of the peninsula, and possibly an ancient Phœnician colony. Near it lay Raithou, a place of many oases and large date-palm plantations which were carefully tended by the monks during the Middle Ages.
The south-eastern parts of the peninsula are rarely visited by Europeans. There are some high mountains, including the Gebel Thebt (7883 ft.), the Gebel Umm Shomer (8449 ft.), and the Gebel Umm Iswed (8236 ft.), in districts that were recently explored by Dr. Hume.[4] The eastern coast-line of the peninsula is relatively inaccessible. There are some creek ports at Sherm, some ten miles north of Ras Mohammad, and some palm trees with a good supply of water at Nakhb. From here it is less than eight miles across the sea to Ras Fartak, the nearest point of Arabia. Further north, opposite the coastland of what is now reckoned the land of Midian, lies Dahab and, beyond it, Ain en Nuêbeh, where the road that leads from the convent to Akaba at the head of the Gulf of Akaba, reaches the coast. From Akaba the mountains are prolonged in the direction of Palestine on both sides of the Wadi el Arabah, the great depression that extends northwards to the Dead Sea. This is “the land of Seir, the country of Edom” of the Bible (Gen. xxxii. 3). Edom signifies red in Hebrew, and the land may have been so called owing to the red sandstone of the district.
Sinai, generally speaking, is a country of stern desolation. Its mountains are bare, its plains are swept by the wind, its river beds are to all appearance waterless. But clusters of bushes that follow the valley floors or rise from the plains, show that moisture percolates the soil beneath the surface, and is procurable by digging down to the harder subsoil, (i.e. “striking the rock”) as was done at the time of the passage of the Israelites. Such digging is done by the Bedawyn at the present day, the holes for water being called hufrah in Arabic. In some places, however, the water along the valleys is thrown up and forms natural oases as in the Wadi Gharandel, the Wadi Feiran, and at Tur. In others, it is raised by means of the mechanical device of a water-wheel and by a shaduf.
Rain falls in the peninsula in sudden downpours, often in connection with a thunderstorm. When we camped in the Wadi Umm Agraf in January of 1906, it rained without ceasing for two days and a night, creating rivulets and a waterfall down the mountain slope. A week later the valley floor was carpeted with verdure and flowers, and the thorny bushes were masses of bloom. Rainstorms may result in a spate, the dreaded seil of the Bedawyn, which often appears several miles below where the rain has actually fallen. In the winter of 1914-15 the Wadi el Arish was twice in spate, and left extensive pools of water behind. The effect of a spate, seen on Dec. 3, 1867, in the Wadi Feiran by the Rev. F. W. Holland, was described by him. In little more than an hour, the Wadi Feiran, at this point about 300 yards wide, was filled with a raging torrent from eight to ten feet deep. Men, animals, and trees were swept past upon the flood, and huge boulders ground along the wady bed with a noise of a hundred mills at work. In this spate perished thirty persons, scores of sheep and goats, camels, and donkeys, and it swept away an entire encampment that had been pitched at the mouth of a small valley on the north side of Mount Serbal.[5]
Disasters of this kind are in part attributable to the reckless deforestation of the country which has gone on unchecked for thousands of years, and continues at the present day. To this is attributable also the calamitous invasion of sand along the shores of the Mediterranean recorded by Arabic writers. In ancient times wood was extensively used for smelting purposes in different parts of the peninsula, as is shown by enormous slag-heaps in the Wadi Baba and in the Wadi Nasb. A great bed of wood ashes beneath the temple-floor at Serabit showed that wood was freely used in offering the holocaust in a district that is now entirely denuded of trees. According to the Mosaic Law, charcoal was used in early times at the Temple service as we gather from “a censer full of burning coals” (Lev. xv. 12).[6] For domestic use it was exported during the Middle Ages, and was regularly delivered by the Bedawyn as tribute to the Pasha in the nineteenth century. Its export continues to this day.