from
Easton's 1897 Bible Dictionary
Ezion-geber
the giant's backbone (so called from the head of a mountain
which runs out into the sea), an ancient city and harbour at the
north-east end of the Elanitic branch of the Red Sea, the Gulf
of Akabah, near Elath or Eloth (Num. 33:35; Deut. 2:8). Here
Solomon built ships, "Tarshish ships," like those trading from
Tyre to Tarshish and the west, which traded with Ophir (1 Kings
9:26; 2 Chr. 8:17); and here also Jehoshaphat's fleet was
shipwrecked (1 Kings 22:48; 2 Chr. 20:36). It became a populous
town, many of the Jews settling in it (2 Kings 16:6, "Elath").
It is supposed that anciently the north end of the gulf flowed
further into the country than now, as far as 'Ain el-Ghudyan,
which is 10 miles up the dry bed of the Arabah, and that
Ezion-geber may have been there.