9 It extended from Aroer on the rim of the Arnon Gorge, and from the town in the middle of the gorge, and included the whole plateau of Medeba as far as Dibon,

Read Joshua 13:9 Using Other Translations

From Aroer, that is upon the bank of the river Arnon, and the city that is in the midst of the river, and all the plain of Medeba unto Dibon;
from Aroer, which is on the edge of the Valley of the Arnon, and the city that is in the middle of the valley, and all the tableland of Medeba as far as Dibon;
Their territory extended from Aroer on the edge of the Arnon Gorge (including the town in the middle of the gorge) to the plain beyond Medeba, as far as Dibon.