Algeria–Morocco border

[2] The boundary starts in the north on the Mediterranean Sea just west of Marsa Ben M'Hidi; it then proceeds overland toward the south via a series of irregular lines, veering slightly to the southeast.

[3] Near the Moroccan town of Figuig it veers sharply to the west, proceeding then in a broadly south-westerly direction via a series of straight and irregular lines.

Upon reaching the Draa River the border then follows this for some distance, before veering sharply to the south, whereupon a straight north–south line proceeds for 116 km (72 mi) down to the Western Sahara tripoint.

The border between it and the Ottoman domains to the east had been vague, and Morocco maintained a traditional, though often weakly enforced, claim to large areas of north-west Africa.

[3] The thinly scarcely inhabited areas south of Figuig the border remained undemarcated, subject to vague and ill-defined administrative practices on the ground of uncertain legal standing.