4 GEOGRAPHY : SOMALILAND [No. 97 of the Warsangeli Mountains the maritime hills vary in height from a few hundred feet to 4,000 ft. ormore ; in the Warsangeli country they vary from about 700 ft. to about 1,500 ft. In some parts of the latter region they are wooded, with stunted trees, mostly acacias, near the coast .

The western part of the maritime zone is known as the Guban , while that portion which lies south of the volcanic hills near Bulhar, east of about 43° 30' east and roughly following the 10th parallel of north latitude, is called the Ogo-Guban , and borders on the Ogo, an important grazing district of the interior plateau. The Ogo -Guban is composed of a series of terraces falling to the north, and traversed by narrow valleys.

Stretches of grass on black vegetable soil are scattered among forests of cedars, acacias, aloes, &c. , and furnish extensive grazing grounds.

Interior Plateau. - The plateau zone is in general a limestone country, in which isolated peaks and ridges, as well as some stretches of plain , are composed ofArchaean rocks, or of sandstone, conglomerates, or igneous rocks. As has been stated, this plateau rises gently from the south and terminates, in most places, in a great pre cipitous scarp descending to the north . In the west of this zone little more than the scarp lies in British territory, and this consists of broken, hilly country rising to altitudes of about 4,500 to 5,500 ft. Farther to the east, between the Ogo and the Ogo -Guban , the altitude is about4,500ft ., while east of that again it rises to about 7,000 ft. in what is generally known as the Golis range, though it appears as a range of hills only when viewed from the north . East of the Golis the scarp is again lower, though farther east again it rises to about 7,000 ft. in the Warsangeli country . From the crest of the scarp the plateau, descending to the south , merges into the Haud plain , for the most part by a gentle slope.