From “Atlas France”, 1929. Click twice on image to enlarge
I drove to Djibouti from Hargeysa (to the south of this map) in 1983 and 1984. We got the coast somewhere to the east of Zeyla, I think, then crossed the border at Loyada, further NW along the coast. The (french built) Djibouti border post was like something out of the film Beau Geste. On one occasion we drove our 4 wheel drive Toyota inland from Djibouti town ,across very rough tracks, to the shores of Lac Assal, just inland from the head of the Gulf of Tadjoura, seen here. It seems to have less water in it than I was there. Where we stopped there was a hot water spring feeding into the lake,which was incredibly salty. The shoreline and lake floor was covered in salt crystals, some of which were too sharp to stand on.