CHAPTER III.

The High Lands of the Great Continent (_continued_)—The Caucasus—The

Western Asiatic Table-Land and its Mountains.

THE Dardanelles and the Sea of Marmora form but a small break in the

mighty girdle of the old continent, which again appears in immense

table-lands, passing through the centre of Asia, of such magnitude that

they occupy nearly two-fifths of the continent. Here everything is on a

much grander scale than in Europe: the table-lands rise above the mean

height of the European mountains, and the mountains themselves that gird

and traverse them surpass those of every other country in altitude. The

most barren deserts are here to be met with, as well as the most

luxuriant productions of animal and vegetable life. The earliest records

of the human race are found in this cradle of civilization, and

monuments still remain which show the skill and power of those nations

which have passed away, but whose moral influence is still visible in

their descendants. Customs, manners, and even prejudices, carry us back

to times beyond the record of history, or even of tradition; while the

magnitude with which the natural world is here developed evinces the

tremendous forces that must have been in action at epochs immeasurably

anterior to the existence of man.

The gigantic mass of high land which extends for 6000 miles between the

Mediterranean and the Pacific is 2000 miles broad at its eastern

extremity, 700 to 1000 in the middle, and somewhat less at its

termination. Colossal mountains and elevated terraces form the edges of

the lofty plains.

Between the 47th and 68th eastern meridians, where the low plains of

Hindostan and Bokara press upon the table-land and reduce its width to

700 or 1000 miles, it is divided into two parts by an enormous knot of

mountains formed by the meeting of the Hindoo Coosh, the Himalaya, the

Tsung-lin, and the transverse ranges of the Beloot Tagh, or Cloudy

Mountains: these two parts differ in height, form, and magnitude.

The western portion, which is the table-land of Persia or plateau of

Iran, is oblong, extending from the shores of Asia Minor to the Hindoo

Coosh and the Solimaun range, which skirts the right bank of the Indus.

It occupies an area of 1,700,000 square miles, generally about 4000 feet

above the sea, and in some places 7000. The Oriental plateau or

table-land of Tibet, much the largest, has an area of 7,600,000 square

miles, a mean altitude of 14,000 feet, and in some parts of Tibet an

absolute altitude of 17,000 feet.

As the table-lands extend from S.W. to N.E., so also do the principal

mountain-chains, as well those which bound the high lands as those which

traverse them. Remarkable exceptions to this equatorial direction of the

Asiatic mass, however, occur in a series of meridional chains, whose

axes extend from S.S.E. to N.N.W., between Cape Comoron, opposite to

Ceylon, and the Arctic Ocean, under the names of the Western Ghauts, the

Solimaun range (which forms the eastern boundary of the table-land of

Persia), the Beloot Tagh, or Bolor (which is the western limit of the

Oriental plateau), and the Ural Mountains. These chains, rich in gold,

lie in different longitudes, and so alternate among themselves that each

begins only in that latitude which has not yet been attained by the

preceding one. The Khinghan, in China, also extends from south to north

along the eastern slopes of the table-land, and forms its boundary at

that end.[26]

The lofty range of the Caucasus, which extends 700 miles between the

Black and Caspian Seas, is an outlying member of the Asiatic high lands.

Offsets diverge like ribs from each side of the central crest, which

penetrate the Russian Steppes on one hand, and on the other cross the

plains of Kara, or valley of the Kour and Rioni, and unite the Caucasus

to the table-land. Some parts of these mountains are very high; the

Elburz, on the western border of Georgia, is 17,796 feet. The central

part of the chain is full of glaciers, and the limit of perpetual snow

is at the altitude of 11,000 feet, which is higher than in any other

chain of the old continent, except the Himalaya.

Anatolia, the most western part of the table-land of Iran, 3000 feet

above the sea, is traversed by short chains and broken groups of

mountains, separated by fertile valleys, which sink rapidly towards the

Archipelago, and end in promontories and islands along the shores of

Asia Minor, which is a country abounding in vast, luxuriant, but

solitary plains, watered by broad rivers—in Alpine platforms and

mountain-ridges broken up by great valleys, opening seawards, with

meandering streams. Single mountains of volcanic formation are

conspicuous objects on the table-land of Anatolia, which is rich in

pasture, though much of the soil is saline and covered with lakes and

marshes. A triple range of limestone mountains, 6000 or 7000 feet high,

divided by narrow but beautiful valleys, is the limit of the Anatolian

table-land along the shores of the Black Sea. Two-thirds of their height

are covered with forests, and broken by wooded glens, leaving a narrow

coast, except near Trebizond, where it is broad and picturesque. The

high land is bounded on the south by the serrated snowy range of the

Taurus, which, beginning in Rhodes, Cos, and other islands in the

Mediterranean, fills the south-western parts of Asia Minor with

ramifications, and, after following the sinuosities of the iron-bound

coast of Karamania in a single lofty range, extends at Samisat, where

the Euphrates has pierced a way through this stony girdle.

About the 50th meridian the table-land is compressed to nearly half its

width, and there the lofty mountainous regions of Armenia, Kourdistan,

and Azerbijan tower higher and higher between the Black Sea, the

Caspian, and the Gulf of Scanderoon in the Mediterranean. Here the cold

treeless plains of Armenia, the earliest abode of man, 7000 feet above

the sea, bear no traces of the Garden of Eden; Mount Ararat, on which

the Ark is said to have rested, stands a solitary majestic volcanic

cone, 17,260 feet above the sea, shrouded in perpetual snow. Though high

and cold, the soil of Armenia is richer than that of Anatolia, and is

better cultivated. It shelves on the north in luxuriant and beautiful

declivities to the low and undulating valley of Kara, south of the

Caucasus; and, on the other hand, the broad and lofty belt of the

Kourdistan mountains, rising abruptly in many parallel ranges from the

plains of Mesopotamia, form its southern limit, and spread their

ramifications wide over its surface. They are rent by deep ravines, and

in many places are so rugged that communication between the villages is

always difficult, and in winter impracticable from the depth of snow.

The line of perpetual congelation is decided and even along their

summit; their flanks are wooded, and the valleys populous and fertile.

A thousand square miles of Kourdistan is occupied by the brackish lake

Van, which is seldom frozen, though 5467 feet above the sea, and

surrounded by lofty mountains.

The Persian mountains, of which Elburz is the principal chain, extend

along the northern brink of the plateau, from Armenia, almost parallel

to the shores of the Caspian Sea, maintaining a considerable elevation

up to the volcanic peak of Demavend, near Tehrân, their culminating

point, which, though 90 miles inland, is a landmark to sailors on the

Caspian. Elevated offsets of these mountains cover the volcanic

table-land of Azerbijan, the fire-country of Zoroaster, and one of the

most fertile provinces of Persia; there the Koh Salavan elevates its

volcanic cone. Beautiful plains, pure streams, and peaceful glades,

interspersed with villages, lie among the mountains, and the Vale of

Khosran Shah, a picture of sylvan beauty, is celebrated as one of the

five paradises of Persian poetry. The vegetation at the foot of these

mountains on the shores of the Caspian has all the exuberance of a

tropical jungle. The Elburz loses its height to the east of Demavend,

and then joins the mountains of Khorasan and the Paropamisan range,

which appear to be chains of mountains when viewed from the low plains

of Khorasan and Balkh, but on the table-land of Persia they merely form

a broad hilly country of rich soil, till they join the Hindoo Coosh.

The table-land of Iran is bounded, for 1,000 miles along the Persian

Gulf and Indian Ocean, by a mountainous belt of from three to seven

parallel ranges, having an average width of 200 miles, and extending

from the extremity of the Kourdistan Mountains to the mouth of the

Indus. The Lasistán Mountains, which form the northern part of this

belt, and bound the vast level plain of the Tigris, rise from it in a

succession of high table-lands divided by very rugged mountains, the

last ridge of which, mostly covered with snow, abuts on the table-land

of Persia. Oaks clothe their flanks; the valleys are of generous soil,

verdant, and cultivated; and many rivers flow through them to swell the

stream of the Tigris. Insulated hill forts, from 2000 to 5000 feet high,

occur in this country, with flat cultivated tops some miles in extent,

accessible only by ladders, or holes cut in their precipitous sides.

These countries are full of ancient inscriptions and remains of

antiquity. The moisture decreases more and more south from Shiraz, and

then the parallel ridges, repulsive in aspect and difficult to pass, are

separated by arid longitudinal valleys, which ascend like steps from the

narrow shores of the Persian Gulf to the table-land. The coasts of the

gulf are burning hot sand solitudes, so completely barren, that the

country from Bassora to the Indus, a distance of 1200 miles, is nearly a

sterile waste. In the few favoured spots on the terraces where water

occurs there is vegetation, and the beauty of these valleys is enhanced

by surrounding sterility.[27]

With the exception of Mazenderan and the other provinces bordering upon

the Caspian, and in the Paropamisan range, Persia is arid, possessing

few perennial springs, and not one great river; in fact, three-tenths of

the country is a desert, and the table-land is nearly a wide scene of

desolation. A great salt-desert occupies 27,000 square miles between

Irak and Khorasan, of which the soil is a stiff clay, covered with

efflorescence of common salt and nitre, often an inch thick, varied only

by a few saline plants and patches of verdure in the hollows. This

dreary waste joins the large sandy and equally dreary desert of Kerman.

Kelat, the capital of Belochistan, is 7000 feet above the level of the

sea: round it there is cultivation, but the greater part of that country

is a lifeless plain, over which the brick-red sand is drifted by the

north wind into ridges like the waves of the sea, often 12 feet high,

without a vestige of vegetation. The blast of the desert, whose hot and

pestilential breath is fatal to man and animals, renders these dismal

sands impassable at certain seasons.

Barren lands or bleak downs prevail at the foot of the Lukee and

Solimaun ranges, formed of bare porphyry and sandstone, which skirt the

eastern edge of the table-land, and dip to the plains of the Indus. In

Afghanistan there is little cultivation except on the banks of the

streams that flow into the Lake Zerrah, but vitality returns towards the

north-east. The plains and valleys among the offsets from the Hindoo

Coosh are of surpassing loveliness, and combine the richest peaceful

beauty with the majesty of the snow-capped mountains by which they are

encircled.

Physical Geography · 第 3 / 36 章